22655779 has 4 divisors (see below), whose sum is σ = 22668984. Its totient is φ = 22642576.

The previous prime is 22655767. The next prime is 22655783. The reversal of 22655779 is 97755622.

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 22655779 - 2⁷ = 22655651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22655579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3562 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (5667246).

Almost surely, 2^22655779 is an apocalyptic number.

22655779 is a deficient number, since it is larger than the sum of its proper divisors (13205).

22655779 is a wasteful number, since it uses less digits than its factorization.

22655779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13204.

The product of its digits is 264600, while the sum is 43.

The square root of 22655779 is about 4759.8087146439. The cubic root of 22655779 is about 282.9608381425.

The spelling of 22655779 in words is "twenty-two million, six hundred fifty-five thousand, seven hundred seventy-nine".