16686716 has 24 divisors (see below), whose sum is σ = 30540720. Its totient is φ = 7967232.

The previous prime is 16686697. The next prime is 16686743. The reversal of 16686716 is 61768661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10511 + ... + 11993.

It is an arithmetic number, because the mean of its divisors is an integer number (1272530).

Almost surely, 2^16686716 is an apocalyptic number.

It is an amenable number.

16686716 is a deficient number, since it is larger than the sum of its proper divisors (13854004).

16686716 is a wasteful number, since it uses less digits than its factorization.

16686716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1611 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 16686716 is about 4084.9376984233. The cubic root of 16686716 is about 255.5388630419.

The spelling of 16686716 in words is "sixteen million, six hundred eighty-six thousand, seven hundred sixteen".