23665039 has 2 divisors, whose sum is σ = 23665040. Its totient is φ = 23665038.

The previous prime is 23665027. The next prime is 23665049. The reversal of 23665039 is 93056632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23665039 - 2⁷ = 23664911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23664995 and 23665013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23665049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11832519 + 11832520.

It is an arithmetic number, because the mean of its divisors is an integer number (11832520).

Almost surely, 2^23665039 is an apocalyptic number.

23665039 is a deficient number, since it is larger than the sum of its proper divisors (1).

23665039 is an equidigital number, since it uses as much as digits as its factorization.

23665039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 23665039 is about 4864.6725480756. The cubic root of 23665039 is about 287.1016850851.

The spelling of 23665039 in words is "twenty-three million, six hundred sixty-five thousand, thirty-nine".