22640579 has 8 divisors (see below), whose sum is σ = 25442592. Its totient is φ = 19990080.

The previous prime is 22640557. The next prime is 22640581. The reversal of 22640579 is 97504622.

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

It is a cyclic number.

It is not a de Polignac number, because 22640579 - 2²⁰ = 21592003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22640539) 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, 37562 + ... + 38159.

It is an arithmetic number, because the mean of its divisors is an integer number (3180324).

Almost surely, 2^22640579 is an apocalyptic number.

22640579 is a deficient number, since it is larger than the sum of its proper divisors (2802013).

22640579 is a wasteful number, since it uses less digits than its factorization.

22640579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75757.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 22640579 is about 4758.2117439223. The cubic root of 22640579 is about 282.8975435197.

The spelling of 22640579 in words is "twenty-two million, six hundred forty thousand, five hundred seventy-nine".