22163566 has 8 divisors (see below), whose sum is σ = 33286464. Its totient is φ = 11068080.

The previous prime is 22163539. The next prime is 22163579. The reversal of 22163566 is 66536122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4695 + ... + 8146.

It is an arithmetic number, because the mean of its divisors is an integer number (4160808).

Almost surely, 2^22163566 is an apocalyptic number.

22163566 is a deficient number, since it is larger than the sum of its proper divisors (11122898).

22163566 is a wasteful number, since it uses less digits than its factorization.

22163566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13706.

The product of its digits is 12960, while the sum is 31.

The square root of 22163566 is about 4707.8196651953. The cubic root of 22163566 is about 280.8966409377.

Adding to 22163566 its reverse (66536122), we get a palindrome (88699688).

The spelling of 22163566 in words is "twenty-two million, one hundred sixty-three thousand, five hundred sixty-six".