22556646 has 24 divisors (see below), whose sum is σ = 55854864. Its totient is φ = 6444720.

The previous prime is 22556627. The next prime is 22556659. The reversal of 22556646 is 64665522.

22556646 is a `hidden beast` number, since 2 + 2 + 5 + 5 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22556646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89385 + ... + 89636.

It is an arithmetic number, because the mean of its divisors is an integer number (2327286).

Almost surely, 2^22556646 is an apocalyptic number.

22556646 is an abundant number, since it is smaller than the sum of its proper divisors (33298218).

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

22556646 is a wasteful number, since it uses less digits than its factorization.

22556646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179036 (or 179033 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 22556646 is about 4749.3837494985. The cubic root of 22556646 is about 282.5475253533.

The spelling of 22556646 in words is "twenty-two million, five hundred fifty-six thousand, six hundred forty-six".