22715999 has 2 divisors, whose sum is σ = 22716000. Its totient is φ = 22715998.

The previous prime is 22715989. The next prime is 22716017. The reversal of 22715999 is 99951722.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22715999 - 2¹² = 22711903 is a prime.

It is a super-2 number, since 2×22715999² = 1032033221136002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22715909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11357999 + 11358000.

It is an arithmetic number, because the mean of its divisors is an integer number (11358000).

Almost surely, 2^22715999 is an apocalyptic number.

22715999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22715999 is an equidigital number, since it uses as much as digits as its factorization.

22715999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 44.

The square root of 22715999 is about 4766.1304010696. The cubic root of 22715999 is about 283.2113235535.

The spelling of 22715999 in words is "twenty-two million, seven hundred fifteen thousand, nine hundred ninety-nine".