22620613 has 2 divisors, whose sum is σ = 22620614. Its totient is φ = 22620612.

The previous prime is 22620599. The next prime is 22620629. The reversal of 22620613 is 31602622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16305444 + 6315169 = 4038^2 + 2513^2 .

It is a cyclic number.

It is not a de Polignac number, because 22620613 - 2⁵ = 22620581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22620683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11310306 + 11310307.

It is an arithmetic number, because the mean of its divisors is an integer number (11310307).

Almost surely, 2^22620613 is an apocalyptic number.

It is an amenable number.

22620613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22620613 is an equidigital number, since it uses as much as digits as its factorization.

22620613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22620613 is about 4756.1132240518. The cubic root of 22620613 is about 282.8143596410.

Subtracting 22620613 from its reverse (31602622), we obtain a square (8982009 = 2997²).

The spelling of 22620613 in words is "twenty-two million, six hundred twenty thousand, six hundred thirteen".