22364665 has 4 divisors (see below), whose sum is σ = 26837604. Its totient is φ = 17891728.

The previous prime is 22364659. The next prime is 22364669. The reversal of 22364665 is 56646322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4012009 + 18352656 = 2003^2 + 4284^2 .

It is a cyclic number.

It is not a de Polignac number, because 22364665 - 2⁵ = 22364633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22364665.

It is not an unprimeable number, because it can be changed into a prime (22364669) 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 3 ways as a sum of consecutive naturals, for example, 2236462 + ... + 2236471.

It is an arithmetic number, because the mean of its divisors is an integer number (6709401).

Almost surely, 2^22364665 is an apocalyptic number.

It is an amenable number.

22364665 is a deficient number, since it is larger than the sum of its proper divisors (4472939).

22364665 is an equidigital number, since it uses as much as digits as its factorization.

22364665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472938.

The product of its digits is 51840, while the sum is 34.

The square root of 22364665 is about 4729.1294124818. The cubic root of 22364665 is about 281.7436472868.

The spelling of 22364665 in words is "twenty-two million, three hundred sixty-four thousand, six hundred sixty-five".