22655985 has 64 divisors (see below), whose sum is σ = 43110144. Its totient is φ = 10035200.

The previous prime is 22655981. The next prime is 22656001. The reversal of 22655985 is 58955622.

It is not a de Polignac number, because 22655985 - 2² = 22655981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22655981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114907 + ... + 115103.

It is an arithmetic number, because the mean of its divisors is an integer number (673596).

Almost surely, 2^22655985 is an apocalyptic number.

It is an amenable number.

22655985 is a deficient number, since it is larger than the sum of its proper divisors (20454159).

22655985 is a wasteful number, since it uses less digits than its factorization.

22655985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274.

The product of its digits is 216000, while the sum is 42.

The square root of 22655985 is about 4759.8303541198. The cubic root of 22655985 is about 282.9616957568.

The spelling of 22655985 in words is "twenty-two million, six hundred fifty-five thousand, nine hundred eighty-five".