117517705 has 4 divisors (see below), whose sum is σ = 141021252. Its totient is φ = 94014160.

The previous prime is 117517693. The next prime is 117517721. The reversal of 117517705 is 507715711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507715711 = 269 ⋅1887419.

It can be written as a sum of positive squares in 2 ways, for example, as 62520649 + 54997056 = 7907^2 + 7416^2 .

It is a de Polignac number, because none of the positive numbers 2^k-117517705 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11751766 + ... + 11751775.

It is an arithmetic number, because the mean of its divisors is an integer number (35255313).

Almost surely, 2^117517705 is an apocalyptic number.

It is an amenable number.

117517705 is a deficient number, since it is larger than the sum of its proper divisors (23503547).

117517705 is an equidigital number, since it uses as much as digits as its factorization.

117517705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23503546.

The product of its (nonzero) digits is 8575, while the sum is 34.

The square root of 117517705 is about 10840.5583343295. The cubic root of 117517705 is about 489.8176539337.

The spelling of 117517705 in words is "one hundred seventeen million, five hundred seventeen thousand, seven hundred five".