23664457 has 2 divisors, whose sum is σ = 23664458. Its totient is φ = 23664456.

The previous prime is 23664451. The next prime is 23664463. The reversal of 23664457 is 75446632.

It is a balanced prime because it is at equal distance from previous prime (23664451) and next prime (23664463).

It can be written as a sum of positive squares in only one way, i.e., 17131321 + 6533136 = 4139^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 23664457 - 2³ = 23664449 is a prime.

It is not a weakly prime, because it can be changed into another prime (23664451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11832228 + 11832229.

It is an arithmetic number, because the mean of its divisors is an integer number (11832229).

Almost surely, 2^23664457 is an apocalyptic number.

It is an amenable number.

23664457 is a deficient number, since it is larger than the sum of its proper divisors (1).

23664457 is an equidigital number, since it uses as much as digits as its factorization.

23664457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

The square root of 23664457 is about 4864.6127286764. The cubic root of 23664457 is about 287.0993314789.

The spelling of 23664457 in words is "twenty-three million, six hundred sixty-four thousand, four hundred fifty-seven".