22405613 has 2 divisors, whose sum is σ = 22405614. Its totient is φ = 22405612.

The previous prime is 22405597. The next prime is 22405631. The reversal of 22405613 is 31650422.

Together with next prime (22405631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20912329 + 1493284 = 4573^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 22405613 - 2⁴ = 22405597 is a prime.

It is a super-2 number, since 2×22405613² = 1004022987811538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22405633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202806 + 11202807.

It is an arithmetic number, because the mean of its divisors is an integer number (11202807).

Almost surely, 2^22405613 is an apocalyptic number.

It is an amenable number.

22405613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22405613 is an equidigital number, since it uses as much as digits as its factorization.

22405613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22405613 is about 4733.4567706910. The cubic root of 22405613 is about 281.9154928446.

The spelling of 22405613 in words is "twenty-two million, four hundred five thousand, six hundred thirteen".