764076864 has 28 divisors (see below), whose sum is σ = 2021620544. Its totient is φ = 254692224.

The previous prime is 764076853. The next prime is 764076869. The reversal of 764076864 is 468670467.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764076869) 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 3 ways as a sum of consecutive naturals, for example, 1989592 + ... + 1989975.

Almost surely, 2^764076864 is an apocalyptic number.

It is an amenable number.

764076864 is an abundant number, since it is smaller than the sum of its proper divisors (1257543680).

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

764076864 is a wasteful number, since it uses less digits than its factorization.

764076864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979582 (or 3979572 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The square root of 764076864 is about 27641.9403081622. The cubic root of 764076864 is about 914.2094015919.

It can be divided in two parts, 76 and 4076864, that added together give a triangular number (4076940 = T₂₈₅₅).

The spelling of 764076864 in words is "seven hundred sixty-four million, seventy-six thousand, eight hundred sixty-four".