23657479 has 4 divisors (see below), whose sum is σ = 23733376. Its totient is φ = 23581584.

The previous prime is 23657477. The next prime is 23657483. The reversal of 23657479 is 97475632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23657479 - 2¹ = 23657477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23657471) 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 in 3 ways as a sum of consecutive naturals, for example, 37479 + ... + 38104.

It is an arithmetic number, because the mean of its divisors is an integer number (5933344).

Almost surely, 2^23657479 is an apocalyptic number.

23657479 is a deficient number, since it is larger than the sum of its proper divisors (75897).

23657479 is an equidigital number, since it uses as much as digits as its factorization.

23657479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75896.

The product of its digits is 317520, while the sum is 43.

The square root of 23657479 is about 4863.8954552910. The cubic root of 23657479 is about 287.0711094625.

The spelling of 23657479 in words is "twenty-three million, six hundred fifty-seven thousand, four hundred seventy-nine".