23620566 has 16 divisors (see below), whose sum is σ = 47289024. Its totient is φ = 7865544.

The previous prime is 23620559. The next prime is 23620573. The reversal of 23620566 is 66502632.

It is an interprime number because it is at equal distance from previous prime (23620559) and next prime (23620573).

It is a super-2 number, since 2×23620566² = 1115862276320712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9621 + ... + 11823.

It is an arithmetic number, because the mean of its divisors is an integer number (2955564).

Almost surely, 2^23620566 is an apocalyptic number.

23620566 is an abundant number, since it is smaller than the sum of its proper divisors (23668458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23620566 is a wasteful number, since it uses less digits than its factorization.

23620566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 23620566 is about 4860.0993816999. The cubic root of 23620566 is about 286.9217251036.

It can be divided in two parts, 236 and 20566, that added together give a palindrome (20802).

The spelling of 23620566 in words is "twenty-three million, six hundred twenty thousand, five hundred sixty-six".