556904 has 16 divisors (see below), whose sum is σ = 1060800. Its totient is φ = 274032.

The previous prime is 556891. The next prime is 556931. The reversal of 556904 is 409655.

It is an unprimeable number.

556904 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (66300).

2⁵⁵⁶⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

556904 is a deficient number, since it is larger than the sum of its proper divisors (503896).

556904 is a wasteful number, since it uses less digits than its factorization.

556904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 556904 is about 746.2600083081. The cubic root of 556904 is about 82.2735264044.

The spelling of 556904 in words is "five hundred fifty-six thousand, nine hundred four".