623540972 has 12 divisors (see below), whose sum is σ = 1111785696. Its totient is φ = 305887920.

The previous prime is 623540947. The next prime is 623540989. The reversal of 623540972 is 279045326.

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, 1470404 + ... + 1470827.

It is an arithmetic number, because the mean of its divisors is an integer number (92648808).

Almost surely, 2^623540972 is an apocalyptic number.

It is an amenable number.

623540972 is a deficient number, since it is larger than the sum of its proper divisors (488244724).

623540972 is a wasteful number, since it uses less digits than its factorization.

623540972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941288 (or 2941286 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 623540972 is about 24970.8023899914. The cubic root of 623540972 is about 854.3221475486.

The spelling of 623540972 in words is "six hundred twenty-three million, five hundred forty thousand, nine hundred seventy-two".