16605668 has 24 divisors (see below), whose sum is σ = 31298400. Its totient is φ = 7680128.

The previous prime is 16605653. The next prime is 16605679. The reversal of 16605668 is 86650661.

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, 1943 + ... + 6081.

It is an arithmetic number, because the mean of its divisors is an integer number (1304100).

Almost surely, 2^16605668 is an apocalyptic number.

It is an amenable number.

16605668 is a deficient number, since it is larger than the sum of its proper divisors (14692732).

16605668 is a wasteful number, since it uses less digits than its factorization.

16605668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 16605668 is about 4075.0052760702. The cubic root of 16605668 is about 255.1244708237.

The spelling of 16605668 in words is "sixteen million, six hundred five thousand, six hundred sixty-eight".