117170217 has 12 divisors (see below), whose sum is σ = 169340340. Its totient is φ = 78069888.

The previous prime is 117170197. The next prime is 117170219. The reversal of 117170217 is 712071711.

It can be written as a sum of positive squares in 2 ways, for example, as 63059481 + 54110736 = 7941^2 + 7356^2 .

It is not a de Polignac number, because 117170217 - 2¹⁴ = 117153833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117170219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26853 + ... + 30909.

It is an arithmetic number, because the mean of its divisors is an integer number (14111695).

Almost surely, 2^117170217 is an apocalyptic number.

It is an amenable number.

117170217 is a deficient number, since it is larger than the sum of its proper divisors (52170123).

117170217 is a wasteful number, since it uses less digits than its factorization.

117170217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272 (or 7269 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 27.

The square root of 117170217 is about 10824.5192502947. The cubic root of 117170217 is about 489.3343968407.

The spelling of 117170217 in words is "one hundred seventeen million, one hundred seventy thousand, two hundred seventeen".