117166657 has 2 divisors, whose sum is σ = 117166658. Its totient is φ = 117166656.

The previous prime is 117166589. The next prime is 117166691. The reversal of 117166657 is 756661711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87909376 + 29257281 = 9376^2 + 5409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117166657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117166957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58583328 + 58583329.

It is an arithmetic number, because the mean of its divisors is an integer number (58583329).

Almost surely, 2^117166657 is an apocalyptic number.

It is an amenable number.

117166657 is a deficient number, since it is larger than the sum of its proper divisors (1).

117166657 is an equidigital number, since it uses as much as digits as its factorization.

117166657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 40.

The square root of 117166657 is about 10824.3548075624. The cubic root of 117166657 is about 489.3294409508.

The spelling of 117166657 in words is "one hundred seventeen million, one hundred sixty-six thousand, six hundred fifty-seven".