556620 has 24 divisors (see below), whose sum is σ = 1558704. Its totient is φ = 148416.

The previous prime is 556613. The next prime is 556627. The reversal of 556620 is 26655.

556620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (556613) and next prime (556627).

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 7 ways as a sum of consecutive naturals, for example, 4579 + ... + 4698.

It is an arithmetic number, because the mean of its divisors is an integer number (64946).

2⁵⁵⁶⁶²⁰ is an apocalyptic number.

It is an amenable number.

556620 is an abundant number, since it is smaller than the sum of its proper divisors (1002084).

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

556620 is a wasteful number, since it uses less digits than its factorization.

556620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289 (or 9287 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 556620 is about 746.0697018376. The cubic root of 556620 is about 82.2595385630.

It can be divided in two parts, 556 and 620, that added together give a triangular number (1176 = T₄₈).

The spelling of 556620 in words is "five hundred fifty-six thousand, six hundred twenty".