666 (number)

← 665 666 667 →
Cardinalsix hundred sixty-six
Ordinal666th
(six hundred sixty-sixth)
Factorization2 × 32 × 37
Divisors1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666
Greek numeralΧΞϚ´
Roman numeralDCLXVI
Greek prefixἑξακόσιοι ἑξήκοντα ἕξ
hexakósioi hexēkonta héx
Latin prefixsescenti sexaginta sex
Binary10100110102
Ternary2202003
Senary30306
Octal12328
Duodecimal47612
Hexadecimal29A16
Chinese numeral六百六十六
Devanagari numeral६६६

666 (six hundred [and] sixty-six) is the natural number following 665 and preceding 667.

In Christianity, 666 is referred to in most manuscripts of chapter 13 of the Book of Revelation of the New Testament as the "number of the beast."[1][2][3]

  1. ^ Revelation 13
  2. ^ Beale, Gregory K. (1999). The Book of Revelation: A Commentary on the Greek Text. Grand Rapids, Michigan: Wm. B. Eerdmans Publishing. p. 718. ISBN 080282174X. Retrieved 9 July 2012.
  3. ^ "The Numerology of the Beast". people.math.harvard.edu. Retrieved 2021-03-30.

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