624556 has 6 divisors (see below), whose sum is σ = 1092980. Its totient is φ = 312276.

The previous prime is 624541. The next prime is 624577. The reversal of 624556 is 655426.

624556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78066 + ... + 78073.

2⁶²⁴⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

624556 is a deficient number, since it is larger than the sum of its proper divisors (468424).

624556 is a wasteful number, since it uses less digits than its factorization.

624556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156143 (or 156141 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 624556 is about 790.2885548962. The cubic root of 624556 is about 85.4785464225.

The spelling of 624556 in words is "six hundred twenty-four thousand, five hundred fifty-six".