16686873 has 12 divisors (see below), whose sum is σ = 27546688. Its totient is φ = 9535320.

The previous prime is 16686869. The next prime is 16686893. The reversal of 16686873 is 37868661.

It is not a de Polignac number, because 16686873 - 2² = 16686869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16686853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132373 + ... + 132498.

Almost surely, 2^16686873 is an apocalyptic number.

It is an amenable number.

16686873 is a deficient number, since it is larger than the sum of its proper divisors (10859815).

16686873 is a wasteful number, since it uses less digits than its factorization.

16686873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264884 (or 264881 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 16686873 is about 4084.9569153175. The cubic root of 16686873 is about 255.5396644673.

The spelling of 16686873 in words is "sixteen million, six hundred eighty-six thousand, eight hundred seventy-three".