22655645 has 32 divisors (see below), whose sum is σ = 30233088. Its totient is φ = 16227328.

The previous prime is 22655629. The next prime is 22655651. The reversal of 22655645 is 54655622.

22655645 = 131² + 132² + ... + 412².

It is not a de Polignac number, because 22655645 - 2⁴ = 22655629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211682 + ... + 211788.

It is an arithmetic number, because the mean of its divisors is an integer number (944784).

Almost surely, 2^22655645 is an apocalyptic number.

It is an amenable number.

22655645 is a deficient number, since it is larger than the sum of its proper divisors (7577443).

22655645 is a wasteful number, since it uses less digits than its factorization.

22655645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its digits is 72000, while the sum is 35.

The square root of 22655645 is about 4759.7946384272. The cubic root of 22655645 is about 282.9602802742.

The spelling of 22655645 in words is "twenty-two million, six hundred fifty-five thousand, six hundred forty-five".