22905637 has 2 divisors, whose sum is σ = 22905638. Its totient is φ = 22905636.

The previous prime is 22905607. The next prime is 22905661. The reversal of 22905637 is 73650922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 617796 = 4721^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 22905637 - 2²³ = 14517029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22905607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11452818 + 11452819.

It is an arithmetic number, because the mean of its divisors is an integer number (11452819).

Almost surely, 2^22905637 is an apocalyptic number.

It is an amenable number.

22905637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22905637 is an equidigital number, since it uses as much as digits as its factorization.

22905637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 22905637 is about 4785.9833890226. The cubic root of 22905637 is about 283.9972434104.

The spelling of 22905637 in words is "twenty-two million, nine hundred five thousand, six hundred thirty-seven".