22442661 has 6 divisors (see below), whose sum is σ = 32417190. Its totient is φ = 14961768.

The previous prime is 22442659. The next prime is 22442699. The reversal of 22442661 is 16624422.

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 2461761 = 4470^2 + 1569^2 .

It is not a de Polignac number, because 22442661 - 2¹ = 22442659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22442561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1246806 + ... + 1246823.

It is an arithmetic number, because the mean of its divisors is an integer number (5402865).

Almost surely, 2^22442661 is an apocalyptic number.

It is an amenable number.

22442661 is a deficient number, since it is larger than the sum of its proper divisors (9974529).

22442661 is a wasteful number, since it uses less digits than its factorization.

22442661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493635 (or 2493632 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 22442661 is about 4737.3685733749. The cubic root of 22442661 is about 282.0707910401.

The spelling of 22442661 in words is "twenty-two million, four hundred forty-two thousand, six hundred sixty-one".