22655723 has 4 divisors (see below), whose sum is σ = 22680840. Its totient is φ = 22630608.

The previous prime is 22655701. The next prime is 22655753. The reversal of 22655723 is 32755622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32755622 = 2 ⋅16377811.

It is a cyclic number.

It is not a de Polignac number, because 22655723 - 2²⁴ = 5878507 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 22655723.

It is not an unprimeable number, because it can be changed into a prime (22655753) 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, 11153 + ... + 13026.

It is an arithmetic number, because the mean of its divisors is an integer number (5670210).

Almost surely, 2^22655723 is an apocalyptic number.

22655723 is a deficient number, since it is larger than the sum of its proper divisors (25117).

22655723 is an equidigital number, since it uses as much as digits as its factorization.

22655723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25116.

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

The square root of 22655723 is about 4759.8028320509. The cubic root of 22655723 is about 282.9606050038.

The spelling of 22655723 in words is "twenty-two million, six hundred fifty-five thousand, seven hundred twenty-three".