22666563 has 48 divisors (see below), whose sum is σ = 36560160. Its totient is φ = 13478400.

The previous prime is 22666541. The next prime is 22666571. The reversal of 22666563 is 36566622.

It is not a de Polignac number, because 22666563 - 2⁵ = 22666531 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (77760) is a multiple of the sum of its prime factors (180).

It is not an unprimeable number, because it can be changed into a prime (22666463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 371553 + ... + 371613.

It is an arithmetic number, because the mean of its divisors is an integer number (761670).

Almost surely, 2^22666563 is an apocalyptic number.

22666563 is a deficient number, since it is larger than the sum of its proper divisors (13893597).

22666563 is a wasteful number, since it uses less digits than its factorization.

22666563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 177 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 22666563 is about 4760.9413985051. The cubic root of 22666563 is about 283.0057268462.

The spelling of 22666563 in words is "twenty-two million, six hundred sixty-six thousand, five hundred sixty-three".