22895681 has 2 divisors, whose sum is σ = 22895682. Its totient is φ = 22895680.

The previous prime is 22895669. The next prime is 22895683. The reversal of 22895681 is 18659822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 9025 = 4784^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 22895681 - 2¹⁰ = 22894657 is a prime.

It is a super-2 number, since 2×22895681² = 1048424416907522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 22895683, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22895683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11447840 + 11447841.

It is an arithmetic number, because the mean of its divisors is an integer number (11447841).

Almost surely, 2^22895681 is an apocalyptic number.

It is an amenable number.

22895681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22895681 is an equidigital number, since it uses as much as digits as its factorization.

22895681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The square root of 22895681 is about 4784.9431553572. The cubic root of 22895681 is about 283.9560907120.

The spelling of 22895681 in words is "twenty-two million, eight hundred ninety-five thousand, six hundred eighty-one".