556856 has 16 divisors (see below), whose sum is σ = 1067040. Its totient is φ = 272320.

The previous prime is 556849. The next prime is 556859. The reversal of 556856 is 658655.

556856 = 85² + 86² + ... + 131².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556859) by changing a digit.

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, 365 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

2⁵⁵⁶⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

556856 is a deficient number, since it is larger than the sum of its proper divisors (510184).

556856 is a wasteful number, since it uses less digits than its factorization.

556856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1530 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 556856 is about 746.2278472424. The cubic root of 556856 is about 82.2711625962.

The spelling of 556856 in words is "five hundred fifty-six thousand, eight hundred fifty-six".