556656 has 20 divisors (see below), whose sum is σ = 1438152. Its totient is φ = 185536.

The previous prime is 556651. The next prime is 556679. The reversal of 556656 is 656655.

556656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556651) 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, 5751 + ... + 5846.

2⁵⁵⁶⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

556656 is an abundant number, since it is smaller than the sum of its proper divisors (881496).

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

556656 is a wasteful number, since it uses less digits than its factorization.

556656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11608 (or 11602 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 556656 is about 746.0938278796. The cubic root of 556656 is about 82.2613119329.

Subtracting 556656 from its reverse (656655), we obtain a palindrome (99999).

The spelling of 556656 in words is "five hundred fifty-six thousand, six hundred fifty-six".