22631661 has 12 divisors (see below), whose sum is σ = 35204988. Its totient is φ = 13927104.

The previous prime is 22631659. The next prime is 22631669. The reversal of 22631661 is 16613622.

22631661 is a `hidden beast` number, since 22 + 631 + 6 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 21206025 = 1194^2 + 4605^2 .

It is not a de Polignac number, because 22631661 - 2¹ = 22631659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22631669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96600 + ... + 96833.

It is an arithmetic number, because the mean of its divisors is an integer number (2933749).

Almost surely, 2^22631661 is an apocalyptic number.

It is an amenable number.

22631661 is a deficient number, since it is larger than the sum of its proper divisors (12573327).

22631661 is a wasteful number, since it uses less digits than its factorization.

22631661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193452 (or 193449 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 22631661 is about 4757.2745348571. The cubic root of 22631661 is about 282.8603947110.

The spelling of 22631661 in words is "twenty-two million, six hundred thirty-one thousand, six hundred sixty-one".