16985699 has 2 divisors, whose sum is σ = 16985700. Its totient is φ = 16985698.

The previous prime is 16985663. The next prime is 16985719. The reversal of 16985699 is 99658961.

It is a strong prime.

It is an emirp because it is prime and its reverse (99658961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16985699 - 2⁸ = 16985443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16985699.

It is not a weakly prime, because it can be changed into another prime (16985609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8492849 + 8492850.

It is an arithmetic number, because the mean of its divisors is an integer number (8492850).

Almost surely, 2^16985699 is an apocalyptic number.

16985699 is a deficient number, since it is larger than the sum of its proper divisors (1).

16985699 is an equidigital number, since it uses as much as digits as its factorization.

16985699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 53.

The square root of 16985699 is about 4121.3710097491. The cubic root of 16985699 is about 257.0560370773.

The spelling of 16985699 in words is "sixteen million, nine hundred eighty-five thousand, six hundred ninety-nine".