22564863 has 24 divisors (see below), whose sum is σ = 34539648. Its totient is φ = 14165712.

The previous prime is 22564847. The next prime is 22564877. The reversal of 22564863 is 36846522.

22564863 is a `hidden beast` number, since 2 + 2 + 5 + 648 + 6 + 3 = 666.

It is not a de Polignac number, because 22564863 - 2⁴ = 22564847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13056 + ... + 14682.

It is an arithmetic number, because the mean of its divisors is an integer number (1439152).

Almost surely, 2^22564863 is an apocalyptic number.

22564863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22564863 is a deficient number, since it is larger than the sum of its proper divisors (11974785).

22564863 is a wasteful number, since it uses less digits than its factorization.

22564863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1720 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 22564863 is about 4750.2487303298. The cubic root of 22564863 is about 282.5818302636.

The spelling of 22564863 in words is "twenty-two million, five hundred sixty-four thousand, eight hundred sixty-three".