764404 has 24 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 361920.

The previous prime is 764399. The next prime is 764431. The reversal of 764404 is 404467.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

764404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9637 + ... + 9715.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2⁷⁶⁴⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

764404 is a deficient number, since it is larger than the sum of its proper divisors (646796).

764404 is a wasteful number, since it uses less digits than its factorization.

764404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 764404 is about 874.3020073178. The cubic root of 764404 is about 91.4339854495.

The spelling of 764404 in words is "seven hundred sixty-four thousand, four hundred four".