22643723 has 2 divisors, whose sum is σ = 22643724. Its totient is φ = 22643722.

The previous prime is 22643713. The next prime is 22643729. The reversal of 22643723 is 32734622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22643723 - 2⁶ = 22643659 is a prime.

It is not a weakly prime, because it can be changed into another prime (22643729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321861 + 11321862.

It is an arithmetic number, because the mean of its divisors is an integer number (11321862).

Almost surely, 2^22643723 is an apocalyptic number.

22643723 is a deficient number, since it is larger than the sum of its proper divisors (1).

22643723 is an equidigital number, since it uses as much as digits as its factorization.

22643723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 29.

The square root of 22643723 is about 4758.5421086715. The cubic root of 22643723 is about 282.9106378360.

The spelling of 22643723 in words is "twenty-two million, six hundred forty-three thousand, seven hundred twenty-three".