22665513 has 16 divisors (see below), whose sum is σ = 32633216. Its totient is φ = 13910400.

The previous prime is 22665493. The next prime is 22665523. The reversal of 22665513 is 31556622.

It is not a de Polignac number, because 22665513 - 2⁵ = 22665481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22665523) 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, 22956 + ... + 23922.

It is an arithmetic number, because the mean of its divisors is an integer number (2039576).

Almost surely, 2^22665513 is an apocalyptic number.

It is an amenable number.

22665513 is a deficient number, since it is larger than the sum of its proper divisors (9967703).

22665513 is a wasteful number, since it uses less digits than its factorization.

22665513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its digits is 10800, while the sum is 30.

The square root of 22665513 is about 4760.8311249193. The cubic root of 22665513 is about 283.0013568174.

The spelling of 22665513 in words is "twenty-two million, six hundred sixty-five thousand, five hundred thirteen".