22513693 has 2 divisors, whose sum is σ = 22513694. Its totient is φ = 22513692.

The previous prime is 22513679. The next prime is 22513721. The reversal of 22513693 is 39631522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 1965604 = 4533^2 + 1402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22513693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22513663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11256846 + 11256847.

It is an arithmetic number, because the mean of its divisors is an integer number (11256847).

Almost surely, 2^22513693 is an apocalyptic number.

It is an amenable number.

22513693 is a deficient number, since it is larger than the sum of its proper divisors (1).

22513693 is an equidigital number, since it uses as much as digits as its factorization.

22513693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 22513693 is about 4744.8596396522. The cubic root of 22513693 is about 282.3680664121.

The spelling of 22513693 in words is "twenty-two million, five hundred thirteen thousand, six hundred ninety-three".