16699 has 2 divisors, whose sum is σ = 16700. Its totient is φ = 16698.

The previous prime is 16693. The next prime is 16703. The reversal of 16699 is 99661.

It is a strong prime.

It is an emirp because it is prime and its reverse (99661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16699 - 2³ = 16691 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 16699.

It is not a weakly prime, because it can be changed into another prime (16691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349 + 8350.

It is an arithmetic number, because the mean of its divisors is an integer number (8350).

2¹⁶⁶⁹⁹ is an apocalyptic number.

16699 is a deficient number, since it is larger than the sum of its proper divisors (1).

16699 is an equidigital number, since it uses as much as digits as its factorization.

16699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 31.

The square root of 16699 is about 129.2246106591. The cubic root of 16699 is about 25.5601553017.

The spelling of 16699 in words is "sixteen thousand, six hundred ninety-nine".