| ||||
---|---|---|---|---|
Cardinal | six hundred sixty-six | |||
Ordinal | 666th (six hundred sixty-sixth) | |||
Factorization | 2 × 32 × 37 | |||
Greek numeral | ΧΞϚ´ | |||
Roman numeral | DCLXVI | |||
Greek prefix | ἑξακόσιοι ἑξήκοντα ἕξ hexakósioi hexēkonta héx | |||
Latin prefix | sescenti sexaginta sex | |||
Binary | 10100110102 | |||
Ternary | 2202003 | |||
Senary | 30306 | |||
Octal | 12328 | |||
Duodecimal | 47612 | |||
Hexadecimal | 29A16 | |||
Chinese numeral | 六百六十六 | |||
Devanagari numeral | ६६६ |
666 (six hundred [and] sixty-six) is the natural number following 665 and preceding 667.
In Christianity, 666 is called the "number of the beast" in (most manuscripts of) chapter 13 of the Book of Revelation of the New Testament.[1][2][3]
666 is the sum of the first 36 natural numbers (, i.e. 1 + 2 + 3 + ... + 34 + 35 + 36 = 666); thus, it is a triangular number. Because 36 is also triangular, 666 is a doubly triangular number. Also, 36 = 15 + 21; 15 and 21 are also triangular numbers, and 152 + 212 = 225 + 441 = 666.
In decimal, 666 is a repdigit (and therefore a palindromic number) and a Smith number. A prime reciprocal magic square based on in decimal has a magic total of 666.
The prime factorization of 666 is . Also, 666 is the sum of the squares of the first seven primes: .
The number of integers which are relatively prime to 666 is , and the number of twin primes less than is 666.[4]
The Roman numeral for 666, DCLXVI, has exactly one occurrence of all symbols whose value is less than 1000 in decreasing order (D = 500, C = 100, L = 50, X = 10, V = 5, I = 1).
Main article: Number of the beast |
In the Textus Receptus manuscripts of the New Testament, the Book of Revelation (13:17–18) cryptically asserts 666 to be "the man's number" or "the number of a man" (depending on how the text is translated) associated with the Beast, an antagonistic creature that appears briefly about two-thirds into the apocalyptic vision. Some manuscripts[which?] of the original Koine Greek use the symbols χξϛ chi xi stigma (or χξϝ with a digamma), while other manuscripts spell out the number in words.[5]
In modern popular culture, 666 has become one of the most widely recognized symbols for the Antichrist or, alternatively, the devil. Earnest references to the number occur both among apocalypticist Christian groups and in explicitly anti-Christian subcultures. References in contemporary Western art or literature are, more likely than not, intentional references to the Beast symbolism. Such popular references are therefore too numerous to list.
It is common to see the symbolic role of the integer 666 transferred to the numerical digit sequence 6-6-6. Some people take the Satanic associations of 666 so seriously that they actively avoid things related to 666 or the digits 6-6-6. This is known as hexakosioihexekontahexaphobia.
The Number of the Beast is cited as 616 in some early biblical manuscripts, the earliest known instance being in Papyrus 115.[6][7]
Mathematicians and others have created a meme with the square root of 666, that is 25.8069. The saying goes, "If 666 is evil, then is 25.8069 the root of all evil?" [20]