117686617 has 2 divisors, whose sum is σ = 117686618. Its totient is φ = 117686616.

The previous prime is 117686609. The next prime is 117686641. The reversal of 117686617 is 716686711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81072016 + 36614601 = 9004^2 + 6051^2 .

It is a cyclic number.

It is not a de Polignac number, because 117686617 - 2³ = 117686609 is a prime.

It is not a weakly prime, because it can be changed into another prime (117686417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58843308 + 58843309.

It is an arithmetic number, because the mean of its divisors is an integer number (58843309).

Almost surely, 2^117686617 is an apocalyptic number.

It is an amenable number.

117686617 is a deficient number, since it is larger than the sum of its proper divisors (1).

117686617 is an equidigital number, since it uses as much as digits as its factorization.

117686617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 43.

The square root of 117686617 is about 10848.3462795027. The cubic root of 117686617 is about 490.0522185083.

The spelling of 117686617 in words is "one hundred seventeen million, six hundred eighty-six thousand, six hundred seventeen".