117171717 has 8 divisors (see below), whose sum is σ = 168246624. Its totient is φ = 72105648.

The previous prime is 117171679. The next prime is 117171721. The reversal of 117171717 is 717171711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117171717 - 2⁶ = 117171653 is a prime.

It is a super-2 number, since 2×117171717² = 27458422529456178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117171737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502163 + ... + 1502240.

It is an arithmetic number, because the mean of its divisors is an integer number (21030828).

Almost surely, 2^117171717 is an apocalyptic number.

It is an amenable number.

117171717 is a deficient number, since it is larger than the sum of its proper divisors (51074907).

117171717 is a wasteful number, since it uses less digits than its factorization.

117171717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004419.

The product of its digits is 2401, while the sum is 33.

The square root of 117171717 is about 10824.5885372147. The cubic root of 117171717 is about 489.3364849665.

It can be divided in two parts, 11 and 7171717, that multiplied together give a palindrome (78888887).

The spelling of 117171717 in words is "one hundred seventeen million, one hundred seventy-one thousand, seven hundred seventeen".