556690 has 16 divisors (see below), whose sum is σ = 1010880. Its totient is φ = 220720.

The previous prime is 556687. The next prime is 556691. The reversal of 556690 is 96655.

It is a happy number.

556690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×556690² = 619807512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (556691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635 + ... + 1945.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2⁵⁵⁶⁶⁹⁰ is an apocalyptic number.

556690 is a deficient number, since it is larger than the sum of its proper divisors (454190).

556690 is a wasteful number, since it uses less digits than its factorization.

556690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 556690 is about 746.1166128696. The cubic root of 556690 is about 82.2629867121.

The spelling of 556690 in words is "five hundred fifty-six thousand, six hundred ninety".