22697879 has 2 divisors, whose sum is σ = 22697880. Its totient is φ = 22697878.

The previous prime is 22697863. The next prime is 22697881. The reversal of 22697879 is 97879622.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22697879 - 2⁴ = 22697863 is a prime.

It is a super-2 number, since 2×22697879² = 1030387422197282, which contains 22 as substring.

Together with 22697881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22697809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11348939 + 11348940.

It is an arithmetic number, because the mean of its divisors is an integer number (11348940).

Almost surely, 2^22697879 is an apocalyptic number.

22697879 is a deficient number, since it is larger than the sum of its proper divisors (1).

22697879 is an equidigital number, since it uses as much as digits as its factorization.

22697879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 50.

The square root of 22697879 is about 4764.2291086806. The cubic root of 22697879 is about 283.1359999267.

The spelling of 22697879 in words is "twenty-two million, six hundred ninety-seven thousand, eight hundred seventy-nine".