22643679 has 16 divisors (see below), whose sum is σ = 30672000. Its totient is φ = 14858016.

The previous prime is 22643659. The next prime is 22643683. The reversal of 22643679 is 97634622.

It is not a de Polignac number, because 22643679 - 2²⁰ = 21595103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79872 + ... + 80154.

It is an arithmetic number, because the mean of its divisors is an integer number (1917000).

Almost surely, 2^22643679 is an apocalyptic number.

22643679 is a deficient number, since it is larger than the sum of its proper divisors (8028321).

22643679 is a wasteful number, since it uses less digits than its factorization.

22643679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its digits is 108864, while the sum is 39.

The square root of 22643679 is about 4758.5374854045. The cubic root of 22643679 is about 282.9104545906.

The spelling of 22643679 in words is "twenty-two million, six hundred forty-three thousand, six hundred seventy-nine".