22009613 has 2 divisors, whose sum is σ = 22009614. Its totient is φ = 22009612.

The previous prime is 22009601. The next prime is 22009633. The reversal of 22009613 is 31690022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 6666724 = 3917^2 + 2582^2 .

It is a cyclic number.

It is not a de Polignac number, because 22009613 - 2¹⁰ = 22008589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22009633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11004806 + 11004807.

It is an arithmetic number, because the mean of its divisors is an integer number (11004807).

Almost surely, 2^22009613 is an apocalyptic number.

It is an amenable number.

22009613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22009613 is an equidigital number, since it uses as much as digits as its factorization.

22009613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 22009613 is about 4691.4403971488. The cubic root of 22009613 is about 280.2447392500.

Adding to 22009613 its reverse (31690022), we get a palindrome (53699635).

It can be divided in two parts, 22009 and 613, that added together give a palindrome (22622).

The spelling of 22009613 in words is "twenty-two million, nine thousand, six hundred thirteen".