22696909 has 2 divisors, whose sum is σ = 22696910. Its totient is φ = 22696908.

The previous prime is 22696901. The next prime is 22696913. The reversal of 22696909 is 90969622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 1334025 = 4622^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 22696909 - 2³ = 22696901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22696901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11348454 + 11348455.

It is an arithmetic number, because the mean of its divisors is an integer number (11348455).

Almost surely, 2^22696909 is an apocalyptic number.

It is an amenable number.

22696909 is a deficient number, since it is larger than the sum of its proper divisors (1).

22696909 is an equidigital number, since it uses as much as digits as its factorization.

22696909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 22696909 is about 4764.1273072830. The cubic root of 22696909 is about 283.1319665714.

The spelling of 22696909 in words is "twenty-two million, six hundred ninety-six thousand, nine hundred nine".