16996717 has 2 divisors, whose sum is σ = 16996718. Its totient is φ = 16996716.

The previous prime is 16996709. The next prime is 16996723. The reversal of 16996717 is 71769961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16232841 + 763876 = 4029^2 + 874^2 .

It is a cyclic number.

It is not a de Polignac number, because 16996717 - 2³ = 16996709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16996757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8498358 + 8498359.

It is an arithmetic number, because the mean of its divisors is an integer number (8498359).

Almost surely, 2^16996717 is an apocalyptic number.

It is an amenable number.

16996717 is a deficient number, since it is larger than the sum of its proper divisors (1).

16996717 is an equidigital number, since it uses as much as digits as its factorization.

16996717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 46.

The square root of 16996717 is about 4122.7074841662. The cubic root of 16996717 is about 257.1116060052. Note that the first 3 decimals are identical.

The spelling of 16996717 in words is "sixteen million, nine hundred ninety-six thousand, seven hundred seventeen".