23917664 has 12 divisors (see below), whose sum is σ = 47087964. Its totient is φ = 11958816.

The previous prime is 23917661. The next prime is 23917679. The reversal of 23917664 is 46671932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23917661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373682 + ... + 373745.

It is an arithmetic number, because the mean of its divisors is an integer number (3923997).

Almost surely, 2^23917664 is an apocalyptic number.

It is an amenable number.

23917664 is a deficient number, since it is larger than the sum of its proper divisors (23170300).

23917664 is an equidigital number, since it uses as much as digits as its factorization.

23917664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747437 (or 747429 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 23917664 is about 4890.5688830646. The cubic root of 23917664 is about 288.1196776276.

The spelling of 23917664 in words is "twenty-three million, nine hundred seventeen thousand, six hundred sixty-four".