117691689 has 8 divisors (see below), whose sum is σ = 160749792. Its totient is φ = 76547360.

The previous prime is 117691669. The next prime is 117691699. The reversal of 117691689 is 986196711.

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

It is a cyclic number.

It is not a de Polignac number, because 117691689 - 2¹¹ = 117689641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117691649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478299 + ... + 478544.

It is an arithmetic number, because the mean of its divisors is an integer number (20093724).

Almost surely, 2^117691689 is an apocalyptic number.

It is an amenable number.

117691689 is a deficient number, since it is larger than the sum of its proper divisors (43058103).

117691689 is an equidigital number, since it uses as much as digits as its factorization.

117691689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956887.

The product of its digits is 163296, while the sum is 48.

The square root of 117691689 is about 10848.5800453331. The cubic root of 117691689 is about 490.0592584170.

The spelling of 117691689 in words is "one hundred seventeen million, six hundred ninety-one thousand, six hundred eighty-nine".