776346769 has 27 divisors (see below), whose sum is σ = 912613681. Its totient is φ = 659795840.

The previous prime is 776346763. The next prime is 776346773. The reversal of 776346769 is 967643677.

The square root of 776346769 is 27863.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 15249025 + 761097744 = 3905^2 + 27588^2 .

It is not a de Polignac number, because 776346769 - 2⁵ = 776346737 is a prime.

It is a super-2 number, since 2×776346769² = 1205428611473478722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776346763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5210307 + ... + 5210455.

Almost surely, 2^776346769 is an apocalyptic number.

776346769 is the 27863-rd square number.

776346769 is the 13932-nd centered octagonal number.

It is an amenable number.

776346769 is a deficient number, since it is larger than the sum of its proper divisors (136266912).

776346769 is a wasteful number, since it uses less digits than its factorization.

776346769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 177 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 55.

The cubic root of 776346769 is about 919.0770394862.

The spelling of 776346769 in words is "seven hundred seventy-six million, three hundred forty-six thousand, seven hundred sixty-nine".