764224072 has 16 divisors (see below), whose sum is σ = 1433270700. Its totient is φ = 382018560.

The previous prime is 764224063. The next prime is 764224081. The reversal of 764224072 is 270422467.

It is an interprime number because it is at equal distance from previous prime (764224063) and next prime (764224081).

It can be written as a sum of positive squares in 2 ways, for example, as 763195876 + 1028196 = 27626^2 + 1014^2 .

It is a super-2 number, since 2×764224072² = 1168076864448522368, which contains 22 as substring.

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33204 + ... + 51292.

Almost surely, 2^764224072 is an apocalyptic number.

It is an amenable number.

764224072 is a deficient number, since it is larger than the sum of its proper divisors (669046628).

764224072 is a wasteful number, since it uses less digits than its factorization.

764224072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23376 (or 23372 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 764224072 is about 27644.6029452405. The cubic root of 764224072 is about 914.2681087291.

The spelling of 764224072 in words is "seven hundred sixty-four million, two hundred twenty-four thousand, seventy-two".