623871264 has 24 divisors (see below), whose sum is σ = 1637662320. Its totient is φ = 207957056.

The previous prime is 623871239. The next prime is 623871271. The reversal of 623871264 is 462178326.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3249234 + ... + 3249425.

It is an arithmetic number, because the mean of its divisors is an integer number (68235930).

Almost surely, 2^623871264 is an apocalyptic number.

It is an amenable number.

623871264 is an abundant number, since it is smaller than the sum of its proper divisors (1013791056).

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

623871264 is a wasteful number, since it uses less digits than its factorization.

623871264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6498672 (or 6498664 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 623871264 is about 24977.4150784264. The cubic root of 623871264 is about 854.4729668077.

The spelling of 623871264 in words is "six hundred twenty-three million, eight hundred seventy-one thousand, two hundred sixty-four".