22594681 has 2 divisors, whose sum is σ = 22594682. Its totient is φ = 22594680.

The previous prime is 22594673. The next prime is 22594721. The reversal of 22594681 is 18649522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22240656 + 354025 = 4716^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 22594681 - 2³ = 22594673 is a prime.

It is a super-2 number, since 2×22594681² = 1021039218983522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22594681.

It is not a weakly prime, because it can be changed into another prime (22594601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11297340 + 11297341.

It is an arithmetic number, because the mean of its divisors is an integer number (11297341).

Almost surely, 2^22594681 is an apocalyptic number.

It is an amenable number.

22594681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22594681 is an equidigital number, since it uses as much as digits as its factorization.

22594681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 22594681 is about 4753.3862666524. The cubic root of 22594681 is about 282.7062466517.

The spelling of 22594681 in words is "twenty-two million, five hundred ninety-four thousand, six hundred eighty-one".