24640664 has 16 divisors (see below), whose sum is σ = 46260720. Its totient is φ = 12304480.

The previous prime is 24640607. The next prime is 24640687. The reversal of 24640664 is 46604642.

It is a self number, because there is not a number n which added to its sum of digits gives 24640664.

It is a congruent number.

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, 7037 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (2891295).

Almost surely, 2^24640664 is an apocalyptic number.

It is an amenable number.

24640664 is a deficient number, since it is larger than the sum of its proper divisors (21620056).

24640664 is a wasteful number, since it uses less digits than its factorization.

24640664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970 (or 3966 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 24640664 is about 4963.9363412518. The cubic root of 24640664 is about 290.9940678125.

The spelling of 24640664 in words is "twenty-four million, six hundred forty thousand, six hundred sixty-four".