23659913 has 4 divisors (see below), whose sum is σ = 24423168. Its totient is φ = 22896660.

The previous prime is 23659907. The next prime is 23659927. The reversal of 23659913 is 31995632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23659913 - 2¹⁸ = 23397769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23659963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381581 + ... + 381642.

It is an arithmetic number, because the mean of its divisors is an integer number (6105792).

Almost surely, 2^23659913 is an apocalyptic number.

It is an amenable number.

23659913 is a deficient number, since it is larger than the sum of its proper divisors (763255).

23659913 is an equidigital number, since it uses as much as digits as its factorization.

23659913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763254.

The product of its digits is 43740, while the sum is 38.

The square root of 23659913 is about 4864.1456598256. The cubic root of 23659913 is about 287.0809542297.

The spelling of 23659913 in words is "twenty-three million, six hundred fifty-nine thousand, nine hundred thirteen".