22642013 has 2 divisors, whose sum is σ = 22642014. Its totient is φ = 22642012.

The previous prime is 22642001. The next prime is 22642063. The reversal of 22642013 is 31024622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20457529 + 2184484 = 4523^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 22642013 - 2⁸ = 22641757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22642063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321006 + 11321007.

It is an arithmetic number, because the mean of its divisors is an integer number (11321007).

Almost surely, 2^22642013 is an apocalyptic number.

It is an amenable number.

22642013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22642013 is an equidigital number, since it uses as much as digits as its factorization.

22642013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22642013 is about 4758.3624283991. The cubic root of 22642013 is about 282.9035160777.

Adding to 22642013 its reverse (31024622), we get a palindrome (53666635).

The spelling of 22642013 in words is "twenty-two million, six hundred forty-two thousand, thirteen".