16686897 has 8 divisors (see below), whose sum is σ = 22967040. Its totient is φ = 10765680.

The previous prime is 16686893. The next prime is 16686899. The reversal of 16686897 is 79868661.

It is a happy number.

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

It is not a de Polignac number, because 16686897 - 2² = 16686893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16686893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89622 + ... + 89807.

It is an arithmetic number, because the mean of its divisors is an integer number (2870880).

Almost surely, 2^16686897 is an apocalyptic number.

It is an amenable number.

16686897 is a deficient number, since it is larger than the sum of its proper divisors (6280143).

16686897 is a wasteful number, since it uses less digits than its factorization.

16686897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179463.

The product of its digits is 870912, while the sum is 51.

The square root of 16686897 is about 4084.9598529239. The cubic root of 16686897 is about 255.5397869778.

The spelling of 16686897 in words is "sixteen million, six hundred eighty-six thousand, eight hundred ninety-seven".