22624997 has 2 divisors, whose sum is σ = 22624998. Its totient is φ = 22624996.

The previous prime is 22624981. The next prime is 22625003. The reversal of 22624997 is 79942622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22033636 + 591361 = 4694^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 22624997 - 2⁴ = 22624981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22624097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11312498 + 11312499.

It is an arithmetic number, because the mean of its divisors is an integer number (11312499).

Almost surely, 2^22624997 is an apocalyptic number.

It is an amenable number.

22624997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22624997 is an equidigital number, since it uses as much as digits as its factorization.

22624997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 22624997 is about 4756.5740822571. The cubic root of 22624997 is about 282.8326287903.

The spelling of 22624997 in words is "twenty-two million, six hundred twenty-four thousand, nine hundred ninety-seven".