16990766 has 8 divisors (see below), whose sum is σ = 27446664. Its totient is φ = 7841880.

The previous prime is 16990751. The next prime is 16990783. The reversal of 16990766 is 66709961.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16990766² = 577372258533512, which contains 22 as substring.

It is a congruent number.

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, 326720 + ... + 326771.

It is an arithmetic number, because the mean of its divisors is an integer number (3430833).

Almost surely, 2^16990766 is an apocalyptic number.

16990766 is a deficient number, since it is larger than the sum of its proper divisors (10455898).

16990766 is a wasteful number, since it uses less digits than its factorization.

16990766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653506.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 16990766 is about 4121.9856865351. The cubic root of 16990766 is about 257.0815953121.

The spelling of 16990766 in words is "sixteen million, nine hundred ninety thousand, seven hundred sixty-six".