23630621 has 16 divisors (see below), whose sum is σ = 28425600. Its totient is φ = 19215168.

The previous prime is 23630609. The next prime is 23630639. The reversal of 23630621 is 12603632.

It is not a de Polignac number, because 23630621 - 2⁶ = 23630557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23630671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10991 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (1776600).

Almost surely, 2^23630621 is an apocalyptic number.

It is an amenable number.

23630621 is a deficient number, since it is larger than the sum of its proper divisors (4794979).

23630621 is a wasteful number, since it uses less digits than its factorization.

23630621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23630621 is about 4861.1337155030. The cubic root of 23630621 is about 286.9624324074.

The spelling of 23630621 in words is "twenty-three million, six hundred thirty thousand, six hundred twenty-one".