23664723 has 16 divisors (see below), whose sum is σ = 33488640. Its totient is φ = 14832224.

The previous prime is 23664703. The next prime is 23664733. The reversal of 23664723 is 32746632.

It is a cyclic number.

It is not a de Polignac number, because 23664723 - 2⁵ = 23664691 is a prime.

It is a super-2 number, since 2×23664723² = 1120038229333458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23664703) 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 15 ways as a sum of consecutive naturals, for example, 1165 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (2093040).

Almost surely, 2^23664723 is an apocalyptic number.

23664723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23664723 is a deficient number, since it is larger than the sum of its proper divisors (9823917).

23664723 is a wasteful number, since it uses less digits than its factorization.

23664723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5898.

The product of its digits is 36288, while the sum is 33.

The square root of 23664723 is about 4864.6400689054. The cubic root of 23664723 is about 287.1004071869.

The spelling of 23664723 in words is "twenty-three million, six hundred sixty-four thousand, seven hundred twenty-three".