16601668 has 18 divisors (see below), whose sum is σ = 30665166. Its totient is φ = 7863264.

The previous prime is 16601633. The next prime is 16601693. The reversal of 16601668 is 86610661.

16601668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 14730244 + 1871424 = 3838^2 + 1368^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4305 + ... + 7192.

Almost surely, 2^16601668 is an apocalyptic number.

It is an amenable number.

16601668 is a deficient number, since it is larger than the sum of its proper divisors (14063498).

16601668 is a wasteful number, since it uses less digits than its factorization.

16601668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11539 (or 11518 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 16601668 is about 4074.5144496001. The cubic root of 16601668 is about 255.1039842478.

The spelling of 16601668 in words is "sixteen million, six hundred one thousand, six hundred sixty-eight".