22639569 has 4 divisors (see below), whose sum is σ = 30186096. Its totient is φ = 15093044.

The previous prime is 22639549. The next prime is 22639577. The reversal of 22639569 is 96593622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22639569 - 2¹¹ = 22637521 is a prime.

It is a super-2 number, since 2×22639569² = 1025100169011522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22639569.

It is not an unprimeable number, because it can be changed into a prime (22639549) 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, 3773259 + ... + 3773264.

It is an arithmetic number, because the mean of its divisors is an integer number (7546524).

Almost surely, 2^22639569 is an apocalyptic number.

It is an amenable number.

22639569 is a deficient number, since it is larger than the sum of its proper divisors (7546527).

22639569 is an equidigital number, since it uses as much as digits as its factorization.

22639569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7546526.

The product of its digits is 174960, while the sum is 42.

The square root of 22639569 is about 4758.1056104294. The cubic root of 22639569 is about 282.8933367549.

It can be divided in two parts, 226395 and 69, that multiplied together give a triangular number (15621255 = T₅₅₈₉).

The spelling of 22639569 in words is "twenty-two million, six hundred thirty-nine thousand, five hundred sixty-nine".