23664419 has 2 divisors, whose sum is σ = 23664420. Its totient is φ = 23664418.

The previous prime is 23664413. The next prime is 23664427. The reversal of 23664419 is 91446632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23664419 - 2⁸ = 23664163 is a prime.

It is a super-2 number, since 2×23664419² = 1120009453215122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23664413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11832209 + 11832210.

It is an arithmetic number, because the mean of its divisors is an integer number (11832210).

Almost surely, 2^23664419 is an apocalyptic number.

23664419 is a deficient number, since it is larger than the sum of its proper divisors (1).

23664419 is an equidigital number, since it uses as much as digits as its factorization.

23664419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 23664419 is about 4864.6088229168. The cubic root of 23664419 is about 287.0991778057.

The spelling of 23664419 in words is "twenty-three million, six hundred sixty-four thousand, four hundred nineteen".