16697117 has 2 divisors, whose sum is σ = 16697118. Its totient is φ = 16697116.

The previous prime is 16697041. The next prime is 16697147. The reversal of 16697117 is 71179661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15912121 + 784996 = 3989^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 16697117 - 2¹⁰ = 16696093 is a prime.

It is a super-2 number, since 2×16697117² = 557587432223378, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16697147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8348558 + 8348559.

It is an arithmetic number, because the mean of its divisors is an integer number (8348559).

Almost surely, 2^16697117 is an apocalyptic number.

It is an amenable number.

16697117 is a deficient number, since it is larger than the sum of its proper divisors (1).

16697117 is an equidigital number, since it uses as much as digits as its factorization.

16697117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 38.

The square root of 16697117 is about 4086.2105917341. The cubic root of 16697117 is about 255.5919453396.

The spelling of 16697117 in words is "sixteen million, six hundred ninety-seven thousand, one hundred seventeen".