23612621 has 2 divisors, whose sum is σ = 23612622. Its totient is φ = 23612620.

The previous prime is 23612599. The next prime is 23612639. The reversal of 23612621 is 12621632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17556100 + 6056521 = 4190^2 + 2461^2 .

It is a cyclic number.

It is not a de Polignac number, because 23612621 - 2¹⁸ = 23350477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23612521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11806310 + 11806311.

It is an arithmetic number, because the mean of its divisors is an integer number (11806311).

Almost surely, 2^23612621 is an apocalyptic number.

It is an amenable number.

23612621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23612621 is an equidigital number, since it uses as much as digits as its factorization.

23612621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 23612621 is about 4859.2819428389. The cubic root of 23612621 is about 286.8895518872.

The spelling of 23612621 in words is "twenty-three million, six hundred twelve thousand, six hundred twenty-one".