16680697 has 12 divisors (see below), whose sum is σ = 18930688. Its totient is φ = 14671800.

The previous prime is 16680691. The next prime is 16680701. The reversal of 16680697 is 79608661.

It is not a de Polignac number, because 16680697 - 2⁷ = 16680569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16680691) 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, 1528 + ... + 5974.

Almost surely, 2^16680697 is an apocalyptic number.

It is an amenable number.

16680697 is a deficient number, since it is larger than the sum of its proper divisors (2249991).

16680697 is a wasteful number, since it uses less digits than its factorization.

16680697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500 (or 4489 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 16680697 is about 4084.2009010332. The cubic root of 16680697 is about 255.5081345393.

The spelling of 16680697 in words is "sixteen million, six hundred eighty thousand, six hundred ninety-seven".