22650660 has 144 divisors (see below), whose sum is σ = 74692800. Its totient is φ = 5536512.

The previous prime is 22650599. The next prime is 22650671. The reversal of 22650660 is 6605622.

22650660 is a `hidden beast` number, since 2 + 2 + 650 + 6 + 6 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126451 + ... + 126629.

It is an arithmetic number, because the mean of its divisors is an integer number (518700).

Almost surely, 2^22650660 is an apocalyptic number.

22650660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22650660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37346400).

22650660 is an abundant number, since it is smaller than the sum of its proper divisors (52042140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22650660 is a wasteful number, since it uses less digits than its factorization.

22650660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 22650660 is about 4759.2709525725. The cubic root of 22650660 is about 282.9395251751.

The spelling of 22650660 in words is "twenty-two million, six hundred fifty thousand, six hundred sixty".