864604 has 18 divisors (see below), whose sum is σ = 1639680. Its totient is φ = 398736.

The previous prime is 864587. The next prime is 864613. The reversal of 864604 is 406468.

864604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37 + ... + 1315.

2⁸⁶⁴⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

864604 is a deficient number, since it is larger than the sum of its proper divisors (775076).

864604 is a wasteful number, since it uses less digits than its factorization.

864604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 864604 is about 929.8408465969. The cubic root of 864604 is about 95.2662521667.

The spelling of 864604 in words is "eight hundred sixty-four thousand, six hundred four".