22668636 has 12 divisors (see below), whose sum is σ = 52893512. Its totient is φ = 7556208.

The previous prime is 22668623. The next prime is 22668641. The reversal of 22668636 is 63686622.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 22668594 and 22668603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944515 + ... + 944538.

Almost surely, 2^22668636 is an apocalyptic number.

It is an amenable number.

22668636 is an abundant number, since it is smaller than the sum of its proper divisors (30224876).

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

22668636 is a wasteful number, since it uses less digits than its factorization.

22668636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889060 (or 1889058 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 22668636 is about 4761.1591025716. The cubic root of 22668636 is about 283.0143541355.

The spelling of 22668636 in words is "twenty-two million, six hundred sixty-eight thousand, six hundred thirty-six".