22642565 has 8 divisors (see below), whose sum is σ = 29641248. Its totient is φ = 16467280.

The previous prime is 22642561. The next prime is 22642637. The reversal of 22642565 is 56524622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22642565 - 2² = 22642561 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 (22642561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205787 + ... + 205896.

It is an arithmetic number, because the mean of its divisors is an integer number (3705156).

Almost surely, 2^22642565 is an apocalyptic number.

It is an amenable number.

22642565 is a deficient number, since it is larger than the sum of its proper divisors (6998683).

22642565 is a wasteful number, since it uses less digits than its factorization.

22642565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411699.

The product of its digits is 28800, while the sum is 32.

The square root of 22642565 is about 4758.4204311935. The cubic root of 22642565 is about 282.9058150704.

The spelling of 22642565 in words is "twenty-two million, six hundred forty-two thousand, five hundred sixty-five".