22104637 has 2 divisors, whose sum is σ = 22104638. Its totient is φ = 22104636.

The previous prime is 22104629. The next prime is 22104671. The reversal of 22104637 is 73640122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17690436 + 4414201 = 4206^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 22104637 - 2³ = 22104629 is a prime.

It is a super-2 number, since 2×22104637² = 977229953803538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22104337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11052318 + 11052319.

It is an arithmetic number, because the mean of its divisors is an integer number (11052319).

Almost surely, 2^22104637 is an apocalyptic number.

It is an amenable number.

22104637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22104637 is an equidigital number, since it uses as much as digits as its factorization.

22104637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 22104637 is about 4701.5568698039. The cubic root of 22104637 is about 280.6474684847.

Adding to 22104637 its reverse (73640122), we get a palindrome (95744759).

The spelling of 22104637 in words is "twenty-two million, one hundred four thousand, six hundred thirty-seven".