16716666 has 16 divisors (see below), whose sum is σ = 33905088. Its totient is φ = 5493600.

The previous prime is 16716659. The next prime is 16716671. The reversal of 16716666 is 66661761.

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, 19195 + ... + 20046.

It is an arithmetic number, because the mean of its divisors is an integer number (2119068).

Almost surely, 2^16716666 is an apocalyptic number.

16716666 is an abundant number, since it is smaller than the sum of its proper divisors (17188422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16716666 is a wasteful number, since it uses less digits than its factorization.

16716666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39317.

The product of its digits is 54432, while the sum is 39.

The square root of 16716666 is about 4088.6019615512. The cubic root of 16716666 is about 255.6916555314.

The spelling of 16716666 in words is "sixteen million, seven hundred sixteen thousand, six hundred sixty-six".