22597879 has 4 divisors (see below), whose sum is σ = 23927184. Its totient is φ = 21268576.

The previous prime is 22597849. The next prime is 22597903. The reversal of 22597879 is 97879522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22597879 - 2¹³ = 22589687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22597819) 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, 664627 + ... + 664660.

It is an arithmetic number, because the mean of its divisors is an integer number (5981796).

Almost surely, 2^22597879 is an apocalyptic number.

22597879 is a deficient number, since it is larger than the sum of its proper divisors (1329305).

22597879 is a wasteful number, since it uses less digits than its factorization.

22597879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329304.

The product of its digits is 635040, while the sum is 49.

The square root of 22597879 is about 4753.7226465161. The cubic root of 22597879 is about 282.7195838899.

The spelling of 22597879 in words is "twenty-two million, five hundred ninety-seven thousand, eight hundred seventy-nine".