22005668 has 12 divisors (see below), whose sum is σ = 38542812. Its totient is φ = 10993440.

The previous prime is 22005649. The next prime is 22005673. The reversal of 22005668 is 86650022.

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 8988004 = 3608^2 + 2998^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22005668.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7646 + ... + 10122.

It is an arithmetic number, because the mean of its divisors is an integer number (3211901).

Almost surely, 2^22005668 is an apocalyptic number.

It is an amenable number.

22005668 is a deficient number, since it is larger than the sum of its proper divisors (16537144).

22005668 is a wasteful number, since it uses less digits than its factorization.

22005668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 22005668 is about 4691.0199317419. The cubic root of 22005668 is about 280.2279945734.

The spelling of 22005668 in words is "twenty-two million, five thousand, six hundred sixty-eight".