22768563 has 4 divisors (see below), whose sum is σ = 30358088. Its totient is φ = 15179040.

The previous prime is 22768553. The next prime is 22768583. The reversal of 22768563 is 36586722.

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

It is a de Polignac number, because none of the positive numbers 2^k-22768563 is a prime.

It is a super-2 number, since 2×22768563² = 1036814922169938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22768553) 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, 3794758 + ... + 3794763.

It is an arithmetic number, because the mean of its divisors is an integer number (7589522).

Almost surely, 2^22768563 is an apocalyptic number.

22768563 is a deficient number, since it is larger than the sum of its proper divisors (7589525).

22768563 is an equidigital number, since it uses as much as digits as its factorization.

22768563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589524.

The product of its digits is 120960, while the sum is 39.

The square root of 22768563 is about 4771.6415414404. The cubic root of 22768563 is about 283.4296021964.

The spelling of 22768563 in words is "twenty-two million, seven hundred sixty-eight thousand, five hundred sixty-three".