556628 has 12 divisors (see below), whose sum is σ = 1000692. Its totient is φ = 270720.

The previous prime is 556627. The next prime is 556639. The reversal of 556628 is 826655.

It is a happy number.

556628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 386884 + 169744 = 622^2 + 412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 556594 and 556603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556627) 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, 1733 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (83391).

2⁵⁵⁶⁶²⁸ is an apocalyptic number.

It is an amenable number.

556628 is a deficient number, since it is larger than the sum of its proper divisors (444064).

556628 is a wasteful number, since it uses less digits than its factorization.

556628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802 (or 3800 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 556628 is about 746.0750632477. The cubic root of 556628 is about 82.2599326518.

The spelling of 556628 in words is "five hundred fifty-six thousand, six hundred twenty-eight".