772766556 has 48 divisors (see below), whose sum is σ = 1924796160. Its totient is φ = 240589440.

The previous prime is 772766521. The next prime is 772766573. The reversal of 772766556 is 655667277.

It is a super-2 number, since 2×772766556² = 1194336300144202272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 772766499 and 772766508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7681 + ... + 40056.

It is an arithmetic number, because the mean of its divisors is an integer number (40099920).

Almost surely, 2^772766556 is an apocalyptic number.

772766556 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

772766556 is an abundant number, since it is smaller than the sum of its proper divisors (1152029604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

772766556 is a wasteful number, since it uses less digits than its factorization.

772766556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47834 (or 47832 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 51.

The square root of 772766556 is about 27798.6790333642. The cubic root of 772766556 is about 917.6620520706.

The spelling of 772766556 in words is "seven hundred seventy-two million, seven hundred sixty-six thousand, five hundred fifty-six".