22559966 has 48 divisors (see below), whose sum is σ = 41023584. Its totient is φ = 9240000.

The previous prime is 22559959. The next prime is 22559983. The reversal of 22559966 is 66995522.

It is a Curzon number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223316 + ... + 223416.

It is an arithmetic number, because the mean of its divisors is an integer number (854658).

Almost surely, 2^22559966 is an apocalyptic number.

22559966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22559966 is a deficient number, since it is larger than the sum of its proper divisors (18463618).

22559966 is a wasteful number, since it uses less digits than its factorization.

22559966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 198 counting only the distinct ones).

The product of its digits is 291600, while the sum is 44.

The square root of 22559966 is about 4749.7332556682. The cubic root of 22559966 is about 282.5613869260.

Subtracting 22559966 from its reverse (66995522), we obtain a square (44435556 = 6666²).

It can be divided in two parts, 2255 and 9966, that added together give a palindrome (12221).

The spelling of 22559966 in words is "twenty-two million, five hundred fifty-nine thousand, nine hundred sixty-six".