22664609 has 16 divisors (see below), whose sum is σ = 25608960. Its totient is φ = 19877760.

The previous prime is 22664567. The next prime is 22664623. The reversal of 22664609 is 90646622.

It is a cyclic number.

It is not a de Polignac number, because 22664609 - 2⁸ = 22664353 is a prime.

It is a super-2 number, since 2×22664609² = 1027369002245762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22664659) 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 15 ways as a sum of consecutive naturals, for example, 94712 + ... + 94950.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^22664609 is an apocalyptic number.

It is an amenable number.

22664609 is a deficient number, since it is larger than the sum of its proper divisors (2944351).

22664609 is a wasteful number, since it uses less digits than its factorization.

22664609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 22664609 is about 4760.7361825667. The cubic root of 22664609 is about 282.9975943225.

The spelling of 22664609 in words is "twenty-two million, six hundred sixty-four thousand, six hundred nine".