870404 has 12 divisors (see below), whose sum is σ = 1533504. Its totient is φ = 432264.

The previous prime is 870403. The next prime is 870407. The reversal of 870404 is 404078.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 870404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (127792).

2⁸⁷⁰⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

870404 is a deficient number, since it is larger than the sum of its proper divisors (663100).

870404 is a wasteful number, since it uses less digits than its factorization.

870404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 870404 is about 932.9544469051. The cubic root of 870404 is about 95.4788016142.

The spelling of 870404 in words is "eight hundred seventy thousand, four hundred four".