16661168 has 20 divisors (see below), whose sum is σ = 32423520. Its totient is φ = 8293824.

The previous prime is 16661147. The next prime is 16661213. The reversal of 16661168 is 86116661.

It is a hoax number, since the sum of its digits (35) 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 3 ways as a sum of consecutive naturals, for example, 1646 + ... + 6002.

It is an arithmetic number, because the mean of its divisors is an integer number (1621176).

Almost surely, 2^16661168 is an apocalyptic number.

It is an amenable number.

16661168 is a deficient number, since it is larger than the sum of its proper divisors (15762352).

16661168 is a wasteful number, since it uses less digits than its factorization.

16661168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604 (or 4598 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 16661168 is about 4081.8094027037. The cubic root of 16661168 is about 255.4083831738.

The spelling of 16661168 in words is "sixteen million, six hundred sixty-one thousand, one hundred sixty-eight".