117636217 has 2 divisors, whose sum is σ = 117636218. Its totient is φ = 117636216.

The previous prime is 117636119. The next prime is 117636221. The reversal of 117636217 is 712636711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74287161 + 43349056 = 8619^2 + 6584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117636217 is a prime.

It is not a weakly prime, because it can be changed into another prime (117636247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58818108 + 58818109.

It is an arithmetic number, because the mean of its divisors is an integer number (58818109).

Almost surely, 2^117636217 is an apocalyptic number.

It is an amenable number.

117636217 is a deficient number, since it is larger than the sum of its proper divisors (1).

117636217 is an equidigital number, since it uses as much as digits as its factorization.

117636217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 117636217 is about 10846.0230960477. The cubic root of 117636217 is about 489.9822525850.

The spelling of 117636217 in words is "one hundred seventeen million, six hundred thirty-six thousand, two hundred seventeen".