904636 has 12 divisors (see below), whose sum is σ = 1652112. Its totient is φ = 432608.

The previous prime is 904633. The next prime is 904637. The reversal of 904636 is 636409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4825 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (137676).

2⁹⁰⁴⁶³⁶ is an apocalyptic number.

It is an amenable number.

904636 is a deficient number, since it is larger than the sum of its proper divisors (747476).

904636 is a wasteful number, since it uses less digits than its factorization.

904636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860 (or 9858 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 904636 is about 951.1235461285. The cubic root of 904636 is about 96.7144327284.

It can be divided in two parts, 904 and 636, that added together give a triangular number (1540 = T₅₅).

The spelling of 904636 in words is "nine hundred four thousand, six hundred thirty-six".