16680699 has 24 divisors (see below), whose sum is σ = 27736800. Its totient is φ = 9462528.

The previous prime is 16680691. The next prime is 16680701. The reversal of 16680699 is 99608661.

It is not a de Polignac number, because 16680699 - 2³ = 16680691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16680691) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8499 + ... + 10275.

It is an arithmetic number, because the mean of its divisors is an integer number (1155700).

Almost surely, 2^16680699 is an apocalyptic number.

16680699 is a deficient number, since it is larger than the sum of its proper divisors (11056101).

16680699 is a wasteful number, since it uses less digits than its factorization.

16680699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1936 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 16680699 is about 4084.2011458791. The cubic root of 16680699 is about 255.5081447510.

The spelling of 16680699 in words is "sixteen million, six hundred eighty thousand, six hundred ninety-nine".