765575990 has 16 divisors (see below), whose sum is σ = 1404038448. Its totient is φ = 300452256.

The previous prime is 765575989. The next prime is 765576013. The reversal of 765575990 is 99575567.

765575990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×765575990² = 1172213192928960200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721712 + ... + 722771.

It is an arithmetic number, because the mean of its divisors is an integer number (87752403).

Almost surely, 2^765575990 is an apocalyptic number.

765575990 is a deficient number, since it is larger than the sum of its proper divisors (638462458).

765575990 is a wasteful number, since it uses less digits than its factorization.

765575990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444543.

The product of its (nonzero) digits is 2976750, while the sum is 53.

The square root of 765575990 is about 27669.0438938537. The cubic root of 765575990 is about 914.8069068092.

The spelling of 765575990 in words is "seven hundred sixty-five million, five hundred seventy-five thousand, nine hundred ninety".