23612639 has 2 divisors, whose sum is σ = 23612640. Its totient is φ = 23612638.

The previous prime is 23612621. The next prime is 23612657. The reversal of 23612639 is 93621632.

It is a balanced prime because it is at equal distance from previous prime (23612621) and next prime (23612657).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23612639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23612339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11806319 + 11806320.

It is an arithmetic number, because the mean of its divisors is an integer number (11806320).

Almost surely, 2^23612639 is an apocalyptic number.

23612639 is a deficient number, since it is larger than the sum of its proper divisors (1).

23612639 is an equidigital number, since it uses as much as digits as its factorization.

23612639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 23612639 is about 4859.2837949640. The cubic root of 23612639 is about 286.8896247862.

The spelling of 23612639 in words is "twenty-three million, six hundred twelve thousand, six hundred thirty-nine".