117097657 has 2 divisors, whose sum is σ = 117097658. Its totient is φ = 117097656.

The previous prime is 117097619. The next prime is 117097661. The reversal of 117097657 is 756790711.

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., 71723961 + 45373696 = 8469^2 + 6736^2 .

It is a cyclic number.

It is not a de Polignac number, because 117097657 - 2⁷ = 117097529 is a prime.

It is a super-2 number, since 2×117097657² = 27423722549779298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117097667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58548828 + 58548829.

It is an arithmetic number, because the mean of its divisors is an integer number (58548829).

Almost surely, 2^117097657 is an apocalyptic number.

It is an amenable number.

117097657 is a deficient number, since it is larger than the sum of its proper divisors (1).

117097657 is an equidigital number, since it uses as much as digits as its factorization.

117097657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 43.

The square root of 117097657 is about 10821.1670812348. The cubic root of 117097657 is about 489.2333659458.

The spelling of 117097657 in words is "one hundred seventeen million, ninety-seven thousand, six hundred fifty-seven".