22355665 has 16 divisors (see below), whose sum is σ = 28285200. Its totient is φ = 16936192.

The previous prime is 22355653. The next prime is 22355677. The reversal of 22355665 is 56655322.

It is an interprime number because it is at equal distance from previous prime (22355653) and next prime (22355677).

It can be written as a sum of positive squares in 8 ways, for example, as 1498176 + 20857489 = 1224^2 + 4567^2 .

It is a cyclic number.

It is not a de Polignac number, because 22355665 - 2⁵ = 22355633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22355665.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6231 + ... + 9139.

It is an arithmetic number, because the mean of its divisors is an integer number (1767825).

Almost surely, 2^22355665 is an apocalyptic number.

It is an amenable number.

22355665 is a deficient number, since it is larger than the sum of its proper divisors (5929535).

22355665 is a wasteful number, since it uses less digits than its factorization.

22355665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its digits is 54000, while the sum is 34.

The square root of 22355665 is about 4728.1777673857. The cubic root of 22355665 is about 281.7058490749.

The spelling of 22355665 in words is "twenty-two million, three hundred fifty-five thousand, six hundred sixty-five".