16805668 has 24 divisors (see below), whose sum is σ = 32266080. Its totient is φ = 7595520.

The previous prime is 16805651. The next prime is 16805681. The reversal of 16805668 is 86650861.

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 16805668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7503 + ... + 9481.

It is an arithmetic number, because the mean of its divisors is an integer number (1344420).

Almost surely, 2^16805668 is an apocalyptic number.

It is an amenable number.

16805668 is a deficient number, since it is larger than the sum of its proper divisors (15460412).

16805668 is a wasteful number, since it uses less digits than its factorization.

16805668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2185 counting only the distinct ones).

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

The square root of 16805668 is about 4099.4716732769. The cubic root of 16805668 is about 256.1446326268.

The spelling of 16805668 in words is "sixteen million, eight hundred five thousand, six hundred sixty-eight".