22685805 has 16 divisors (see below), whose sum is σ = 40330560. Its totient is φ = 12099024.

The previous prime is 22685779. The next prime is 22685807. The reversal of 22685805 is 50858622.

It is not a de Polignac number, because 22685805 - 2⁸ = 22685549 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22685805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22685807) 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, 83887 + ... + 84156.

It is an arithmetic number, because the mean of its divisors is an integer number (2520660).

Almost surely, 2^22685805 is an apocalyptic number.

It is an amenable number.

22685805 is a deficient number, since it is larger than the sum of its proper divisors (17644755).

22685805 is a wasteful number, since it uses less digits than its factorization.

22685805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168057 (or 168051 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 22685805 is about 4762.9617886353. The cubic root of 22685805 is about 283.0857868590.

The spelling of 22685805 in words is "twenty-two million, six hundred eighty-five thousand, eight hundred five".