16992317 has 2 divisors, whose sum is σ = 16992318. Its totient is φ = 16992316.

The previous prime is 16992293. The next prime is 16992319. The reversal of 16992317 is 71329961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16736281 + 256036 = 4091^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 16992317 - 2⁶ = 16992253 is a prime.

Together with 16992319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16992319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8496158 + 8496159.

It is an arithmetic number, because the mean of its divisors is an integer number (8496159).

Almost surely, 2^16992317 is an apocalyptic number.

It is an amenable number.

16992317 is a deficient number, since it is larger than the sum of its proper divisors (1).

16992317 is an equidigital number, since it uses as much as digits as its factorization.

16992317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 16992317 is about 4122.1738197218. The cubic root of 16992317 is about 257.0894176280.

The spelling of 16992317 in words is "sixteen million, nine hundred ninety-two thousand, three hundred seventeen".