22666613 has 4 divisors (see below), whose sum is σ = 22739808. Its totient is φ = 22593420.

The previous prime is 22666597. The next prime is 22666619. The reversal of 22666613 is 31666622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22666613 - 2⁴ = 22666597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22666613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22666619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36131 + ... + 36752.

It is an arithmetic number, because the mean of its divisors is an integer number (5684952).

Almost surely, 2^22666613 is an apocalyptic number.

It is an amenable number.

22666613 is a deficient number, since it is larger than the sum of its proper divisors (73195).

22666613 is an equidigital number, since it uses as much as digits as its factorization.

22666613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73194.

The product of its digits is 15552, while the sum is 32.

The square root of 22666613 is about 4760.9466495646. The cubic root of 22666613 is about 283.0059349394.

Subtracting 22666613 from its reverse (31666622), we obtain a palindrome (9000009).

The spelling of 22666613 in words is "twenty-two million, six hundred sixty-six thousand, six hundred thirteen".