23664287 has 2 divisors, whose sum is σ = 23664288. Its totient is φ = 23664286.

The previous prime is 23664281. The next prime is 23664307. The reversal of 23664287 is 78246632.

23664287 is nontrivially palindromic in base 14.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23664287 - 2⁴ = 23664271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23664287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23664281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11832143 + 11832144.

It is an arithmetic number, because the mean of its divisors is an integer number (11832144).

Almost surely, 2^23664287 is an apocalyptic number.

23664287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23664287 is an equidigital number, since it uses as much as digits as its factorization.

23664287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 23664287 is about 4864.5952555172. The cubic root of 23664287 is about 287.0986439921.

The spelling of 23664287 in words is "twenty-three million, six hundred sixty-four thousand, two hundred eighty-seven".