23664663 has 64 divisors (see below), whose sum is σ = 41817600. Its totient is φ = 13063680.

The previous prime is 23664653. The next prime is 23664679. The reversal of 23664663 is 36646632.

23664663 is a `hidden beast` number, since 2 + 3 + 6 + 646 + 6 + 3 = 666.

It is not a de Polignac number, because 23664663 - 2⁴ = 23664647 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

23664663 is a Rhonda number in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23664623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 217053 + ... + 217161.

It is an arithmetic number, because the mean of its divisors is an integer number (653400).

Almost surely, 2^23664663 is an apocalyptic number.

23664663 is a deficient number, since it is larger than the sum of its proper divisors (18152937).

23664663 is a wasteful number, since it uses less digits than its factorization.

23664663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 183 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 23664663 is about 4864.6339019499. The cubic root of 23664663 is about 287.1001645467.

The spelling of 23664663 in words is "twenty-three million, six hundred sixty-four thousand, six hundred sixty-three".