22636091 has 2 divisors, whose sum is σ = 22636092. Its totient is φ = 22636090.

The previous prime is 22636079. The next prime is 22636109. The reversal of 22636091 is 19063622.

Together with next prime (22636109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22636091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22636021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11318045 + 11318046.

It is an arithmetic number, because the mean of its divisors is an integer number (11318046).

Almost surely, 2^22636091 is an apocalyptic number.

22636091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22636091 is an equidigital number, since it uses as much as digits as its factorization.

22636091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22636091 is about 4757.7401148024. The cubic root of 22636091 is about 282.8788495325.

The spelling of 22636091 in words is "twenty-two million, six hundred thirty-six thousand, ninety-one".