16688207 has 2 divisors, whose sum is σ = 16688208. Its totient is φ = 16688206.

The previous prime is 16688183. The next prime is 16688219. The reversal of 16688207 is 70288661.

It is a strong prime.

It is an emirp because it is prime and its reverse (70288661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16688207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16681207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8344103 + 8344104.

It is an arithmetic number, because the mean of its divisors is an integer number (8344104).

Almost surely, 2^16688207 is an apocalyptic number.

16688207 is a deficient number, since it is larger than the sum of its proper divisors (1).

16688207 is an equidigital number, since it uses as much as digits as its factorization.

16688207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 16688207 is about 4085.1201940702. The cubic root of 16688207 is about 255.5464738284.

The spelling of 16688207 in words is "sixteen million, six hundred eighty-eight thousand, two hundred seven".