117665947 has 8 divisors (see below), whose sum is σ = 135862496. Its totient is φ = 99816192.

The previous prime is 117665939. The next prime is 117665969. The reversal of 117665947 is 749566711.

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

It is not a de Polignac number, because 117665947 - 2³ = 117665939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117665897 and 117665906.

It is not an unprimeable number, because it can be changed into a prime (117665927) 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, 85968 + ... + 87325.

It is an arithmetic number, because the mean of its divisors is an integer number (16982812).

Almost surely, 2^117665947 is an apocalyptic number.

117665947 is a deficient number, since it is larger than the sum of its proper divisors (18196549).

117665947 is an equidigital number, since it uses as much as digits as its factorization.

117665947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173397.

The product of its digits is 317520, while the sum is 46.

The square root of 117665947 is about 10847.3935579014. The cubic root of 117665947 is about 490.0235265672.

The spelling of 117665947 in words is "one hundred seventeen million, six hundred sixty-five thousand, nine hundred forty-seven".