18660568 has 16 divisors (see below), whose sum is σ = 35075880. Its totient is φ = 9307008.

The previous prime is 18660559. The next prime is 18660583. The reversal of 18660568 is 86506681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18660568.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 771 + ... + 6157.

Almost surely, 2^18660568 is an apocalyptic number.

It is an amenable number.

18660568 is a deficient number, since it is larger than the sum of its proper divisors (16415312).

18660568 is a wasteful number, since it uses less digits than its factorization.

18660568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826 (or 5822 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 18660568 is about 4319.7879577590. The cubic root of 18660568 is about 265.2415881612.

The spelling of 18660568 in words is "eighteen million, six hundred sixty thousand, five hundred sixty-eight".