764036628 has 12 divisors (see below), whose sum is σ = 1782752160. Its totient is φ = 254678872.

The previous prime is 764036621. The next prime is 764036629. The reversal of 764036628 is 826630467.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×764036628² = 1167503937851220768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 764036628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764036621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31834848 + ... + 31834871.

It is an arithmetic number, because the mean of its divisors is an integer number (148562680).

Almost surely, 2^764036628 is an apocalyptic number.

It is an amenable number.

764036628 is an abundant number, since it is smaller than the sum of its proper divisors (1018715532).

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

764036628 is a wasteful number, since it uses less digits than its factorization.

764036628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63669726 (or 63669724 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 764036628 is about 27641.2124914954. The cubic root of 764036628 is about 914.1933540026.

The spelling of 764036628 in words is "seven hundred sixty-four million, thirty-six thousand, six hundred twenty-eight".