22636013 has 2 divisors, whose sum is σ = 22636014. Its totient is φ = 22636012.

The previous prime is 22635997. The next prime is 22636021. The reversal of 22636013 is 31063622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21548164 + 1087849 = 4642^2 + 1043^2 .

It is a cyclic number.

It is not a de Polignac number, because 22636013 - 2⁴ = 22635997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22636013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22636073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11318006 + 11318007.

It is an arithmetic number, because the mean of its divisors is an integer number (11318007).

Almost surely, 2^22636013 is an apocalyptic number.

It is an amenable number.

22636013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22636013 is an equidigital number, since it uses as much as digits as its factorization.

22636013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 22636013 is about 4757.7319176263. The cubic root of 22636013 is about 282.8785246152.

Adding to 22636013 its reverse (31063622), we get a palindrome (53699635).

The spelling of 22636013 in words is "twenty-two million, six hundred thirty-six thousand, thirteen".