864804 has 24 divisors (see below), whose sum is σ = 2124640. Its totient is φ = 273024.

The previous prime is 864803. The next prime is 864811. The reversal of 864804 is 408468.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864804.

It is not an unprimeable number, because it can be changed into a prime (864803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1669 + ... + 2124.

2⁸⁶⁴⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

864804 is an abundant number, since it is smaller than the sum of its proper divisors (1259836).

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

864804 is a wasteful number, since it uses less digits than its factorization.

864804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 864804 is about 929.9483856645. The cubic root of 864804 is about 95.2735972563.

The spelling of 864804 in words is "eight hundred sixty-four thousand, eight hundred four".