22636871 has 2 divisors, whose sum is σ = 22636872. Its totient is φ = 22636870.

The previous prime is 22636841. The next prime is 22636919. The reversal of 22636871 is 17863622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22636871 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22636811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11318435 + 11318436.

It is an arithmetic number, because the mean of its divisors is an integer number (11318436).

Almost surely, 2^22636871 is an apocalyptic number.

22636871 is a deficient number, since it is larger than the sum of its proper divisors (1).

22636871 is an equidigital number, since it uses as much as digits as its factorization.

22636871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 22636871 is about 4757.8220857867. The cubic root of 22636871 is about 282.8820986649.

The spelling of 22636871 in words is "twenty-two million, six hundred thirty-six thousand, eight hundred seventy-one".