22694681 has 2 divisors, whose sum is σ = 22694682. Its totient is φ = 22694680.

The previous prime is 22694671. The next prime is 22694699. The reversal of 22694681 is 18649622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21855625 + 839056 = 4675^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 22694681 - 2¹⁴ = 22678297 is a prime.

It is a super-2 number, since 2×22694681² = 1030097091383522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22694611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11347340 + 11347341.

It is an arithmetic number, because the mean of its divisors is an integer number (11347341).

Almost surely, 2^22694681 is an apocalyptic number.

It is an amenable number.

22694681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22694681 is an equidigital number, since it uses as much as digits as its factorization.

22694681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 22694681 is about 4763.8934706813. The cubic root of 22694681 is about 283.1227018934.

The spelling of 22694681 in words is "twenty-two million, six hundred ninety-four thousand, six hundred eighty-one".