556986 has 8 divisors (see below), whose sum is σ = 1113984. Its totient is φ = 185660.

The previous prime is 556981. The next prime is 556987. The reversal of 556986 is 689655.

It is a sphenic number, since it is the product of 3 distinct primes.

556986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (556981) 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, 46410 + ... + 46421.

It is an arithmetic number, because the mean of its divisors is an integer number (139248).

2⁵⁵⁶⁹⁸⁶ is an apocalyptic number.

556986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

556986 is a wasteful number, since it uses less digits than its factorization.

556986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92836.

The product of its digits is 64800, while the sum is 39.

The square root of 556986 is about 746.3149469225. The cubic root of 556986 is about 82.2775642625.

The spelling of 556986 in words is "five hundred fifty-six thousand, nine hundred eighty-six".