22164365 has 4 divisors (see below), whose sum is σ = 26597244. Its totient is φ = 17731488.

The previous prime is 22164347. The next prime is 22164367. The reversal of 22164365 is 56346122.

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 4541161 + 17623204 = 2131^2 + 4198^2 .

It is a cyclic number.

It is not a de Polignac number, because 22164365 - 2¹⁶ = 22098829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22164367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216432 + ... + 2216441.

It is an arithmetic number, because the mean of its divisors is an integer number (6649311).

Almost surely, 2^22164365 is an apocalyptic number.

It is an amenable number.

22164365 is a deficient number, since it is larger than the sum of its proper divisors (4432879).

22164365 is an equidigital number, since it uses as much as digits as its factorization.

22164365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432878.

The product of its digits is 8640, while the sum is 29.

The square root of 22164365 is about 4707.9045232460. The cubic root of 22164365 is about 280.9000163530.

The spelling of 22164365 in words is "twenty-two million, one hundred sixty-four thousand, three hundred sixty-five".