23638579 has 2 divisors, whose sum is σ = 23638580. Its totient is φ = 23638578.

The previous prime is 23638553. The next prime is 23638607. The reversal of 23638579 is 97583632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23638579 - 2¹⁷ = 23507507 is a prime.

It is not a weakly prime, because it can be changed into another prime (23638529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11819289 + 11819290.

It is an arithmetic number, because the mean of its divisors is an integer number (11819290).

Almost surely, 2^23638579 is an apocalyptic number.

23638579 is a deficient number, since it is larger than the sum of its proper divisors (1).

23638579 is an equidigital number, since it uses as much as digits as its factorization.

23638579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 23638579 is about 4861.9521799376. The cubic root of 23638579 is about 286.9946418972.

The spelling of 23638579 in words is "twenty-three million, six hundred thirty-eight thousand, five hundred seventy-nine".