640113024 has 64 divisors (see below), whose sum is σ = 1746293040. Its totient is φ = 207599616.

The previous prime is 640112999. The next prime is 640113031. The reversal of 640113024 is 420311046.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8319 + ... + 36734.

Almost surely, 2^640113024 is an apocalyptic number.

640113024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

640113024 is an abundant number, since it is smaller than the sum of its proper divisors (1106180016).

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

640113024 is a wasteful number, since it uses less digits than its factorization.

640113024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45107 (or 45095 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 640113024 is about 25300.4550156712. The cubic root of 640113024 is about 861.8246027823.

The spelling of 640113024 in words is "six hundred forty million, one hundred thirteen thousand, twenty-four".