869604 has 12 divisors (see below), whose sum is σ = 2029104. Its totient is φ = 289864.

The previous prime is 869599. The next prime is 869657. The reversal of 869604 is 406968.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×869604² = 1512422233632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869604.

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, 36222 + ... + 36245.

It is an arithmetic number, because the mean of its divisors is an integer number (169092).

2⁸⁶⁹⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

869604 is an abundant number, since it is smaller than the sum of its proper divisors (1159500).

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

869604 is a wasteful number, since it uses less digits than its factorization.

869604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72474 (or 72472 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 869604 is about 932.5256028657. The cubic root of 869604 is about 95.4495406982.

The spelling of 869604 in words is "eight hundred sixty-nine thousand, six hundred four".