776

776 = 2³ x 97.

776 has a representation as a sum of two squares: 776 = 10² + 26².

776² = 602,176 and 602 + 176 = 778 = 776 + 2.

776 is 30020 in base 4 and 3332 in base 6. It is 646 in base 11 and 272 in base 18. It is 11101 in base 5.

776 x 783 = 607,608 (n times n + 7 gives the concatenation of two numbers m and m + 1).

In the film Bruce Almighty, God contacts Bruce, via pager, using an actual phone number rather than a number in the standard fictional 555 telephone exchange: 776-2323.

Source: On-Line Encyclopedia of Integer Sequences