772136656 has 10 divisors (see below), whose sum is σ = 1496014802. Its totient is φ = 386068320.

The previous prime is 772136647. The next prime is 772136671. The reversal of 772136656 is 656631277.

772136656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 496576656 + 275560000 = 22284^2 + 16600^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24129255 + ... + 24129286.

Almost surely, 2^772136656 is an apocalyptic number.

It is an amenable number.

772136656 is a deficient number, since it is larger than the sum of its proper divisors (723878146).

772136656 is a wasteful number, since it uses less digits than its factorization.

772136656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48258549 (or 48258543 counting only the distinct ones).

The product of its digits is 317520, while the sum is 43.

The square root of 772136656 is about 27787.3470486119. The cubic root of 772136656 is about 917.4126483967.

The spelling of 772136656 in words is "seven hundred seventy-two million, one hundred thirty-six thousand, six hundred fifty-six".