22668739 has 4 divisors (see below), whose sum is σ = 22795560. Its totient is φ = 22541920.

The previous prime is 22668733. The next prime is 22668757. The reversal of 22668739 is 93786622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22668739 - 2⁵ = 22668707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22668695 and 22668704.

It is not an unprimeable number, because it can be changed into a prime (22668733) 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, 63142 + ... + 63499.

It is an arithmetic number, because the mean of its divisors is an integer number (5698890).

Almost surely, 2^22668739 is an apocalyptic number.

22668739 is a deficient number, since it is larger than the sum of its proper divisors (126821).

22668739 is a wasteful number, since it uses less digits than its factorization.

22668739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126820.

The product of its digits is 217728, while the sum is 43.

The square root of 22668739 is about 4761.1699192530. The cubic root of 22668739 is about 283.0147827811.

The spelling of 22668739 in words is "twenty-two million, six hundred sixty-eight thousand, seven hundred thirty-nine".