22608013 has 2 divisors, whose sum is σ = 22608014. Its totient is φ = 22608012.

The previous prime is 22607993. The next prime is 22608029. The reversal of 22608013 is 31080622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18335524 + 4272489 = 4282^2 + 2067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22608013 is a prime.

It is a super-2 number, since 2×22608013² = 1022244503616338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22608713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11304006 + 11304007.

It is an arithmetic number, because the mean of its divisors is an integer number (11304007).

Almost surely, 2^22608013 is an apocalyptic number.

It is an amenable number.

22608013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22608013 is an equidigital number, since it uses as much as digits as its factorization.

22608013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22608013 is about 4754.7884285213. The cubic root of 22608013 is about 282.7618393613.

Adding to 22608013 its reverse (31080622), we get a palindrome (53688635).

The spelling of 22608013 in words is "twenty-two million, six hundred eight thousand, thirteen".