22605513 has 24 divisors (see below), whose sum is σ = 35425728. Its totient is φ = 12783456.

The previous prime is 22605509. The next prime is 22605547. The reversal of 22605513 is 31550622.

It is not a de Polignac number, because 22605513 - 2² = 22605509 is a prime.

It is a super-2 number, since 2×22605513² = 1022018435986338, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22605503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14395 + ... + 15887.

It is an arithmetic number, because the mean of its divisors is an integer number (1476072).

Almost surely, 2^22605513 is an apocalyptic number.

It is an amenable number.

22605513 is a deficient number, since it is larger than the sum of its proper divisors (12820215).

22605513 is a wasteful number, since it uses less digits than its factorization.

22605513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 22605513 is about 4754.5255283782. The cubic root of 22605513 is about 282.7514163510.

The spelling of 22605513 in words is "twenty-two million, six hundred five thousand, five hundred thirteen".