624640056 has 32 divisors (see below), whose sum is σ = 1563023760. Its totient is φ = 208023552.

The previous prime is 624640013. The next prime is 624640057. The reversal of 624640056 is 650046426.

It is a junction number, because it is equal to n+sod(n) for n = 624639999 and 624640026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624640057) 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, 16386 + ... + 38958.

Almost surely, 2^624640056 is an apocalyptic number.

It is an amenable number.

624640056 is an abundant number, since it is smaller than the sum of its proper divisors (938383704).

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

624640056 is a wasteful number, since it uses less digits than its factorization.

624640056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23735 (or 23731 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 624640056 is about 24992.8000832240. The cubic root of 624640056 is about 854.8238096646.

The spelling of 624640056 in words is "six hundred twenty-four million, six hundred forty thousand, fifty-six".