22624631 has 2 divisors, whose sum is σ = 22624632. Its totient is φ = 22624630.

The previous prime is 22624621. The next prime is 22624639. The reversal of 22624631 is 13642622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22624631 - 2²² = 18430327 is a prime.

It is a super-2 number, since 2×22624631² = 1023747855772322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22624631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22624639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11312315 + 11312316.

It is an arithmetic number, because the mean of its divisors is an integer number (11312316).

Almost surely, 2^22624631 is an apocalyptic number.

22624631 is a deficient number, since it is larger than the sum of its proper divisors (1).

22624631 is an equidigital number, since it uses as much as digits as its factorization.

22624631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 22624631 is about 4756.5356090331. The cubic root of 22624631 is about 282.8311036733.

Subtracting from 22624631 its reverse (13642622), we obtain a square (8982009 = 2997²).

The spelling of 22624631 in words is "twenty-two million, six hundred twenty-four thousand, six hundred thirty-one".