22556723 has 4 divisors (see below), whose sum is σ = 25779120. Its totient is φ = 19334328.

The previous prime is 22556707. The next prime is 22556731. The reversal of 22556723 is 32765522.

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 22556723 - 2⁴ = 22556707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22556723.

It is not an unprimeable number, because it can be changed into a prime (22556753) 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, 1611188 + ... + 1611201.

It is an arithmetic number, because the mean of its divisors is an integer number (6444780).

Almost surely, 2^22556723 is an apocalyptic number.

22556723 is a deficient number, since it is larger than the sum of its proper divisors (3222397).

22556723 is an equidigital number, since it uses as much as digits as its factorization.

22556723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222396.

The product of its digits is 25200, while the sum is 32.

The square root of 22556723 is about 4749.3918558064. The cubic root of 22556723 is about 282.5478468570.

The spelling of 22556723 in words is "twenty-two million, five hundred fifty-six thousand, seven hundred twenty-three".