22068513 has 6 divisors (see below), whose sum is σ = 31876754. Its totient is φ = 14712336.

The previous prime is 22068509. The next prime is 22068547. The reversal of 22068513 is 31586022.

It can be written as a sum of positive squares in only one way, i.e., 21455424 + 613089 = 4632^2 + 783^2 .

It is not a de Polignac number, because 22068513 - 2² = 22068509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22068583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1226020 + ... + 1226037.

Almost surely, 2^22068513 is an apocalyptic number.

It is an amenable number.

22068513 is a deficient number, since it is larger than the sum of its proper divisors (9808241).

22068513 is a wasteful number, since it uses less digits than its factorization.

22068513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452063 (or 2452060 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 22068513 is about 4697.7135928024. The cubic root of 22068513 is about 280.4945045488.

The spelling of 22068513 in words is "twenty-two million, sixty-eight thousand, five hundred thirteen".