117663818 has 8 divisors (see below), whose sum is σ = 179487360. Its totient is φ = 57834700.

The previous prime is 117663779. The next prime is 117663823. The reversal of 117663818 is 818366711.

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

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, 498458 + ... + 498693.

It is an arithmetic number, because the mean of its divisors is an integer number (22435920).

Almost surely, 2^117663818 is an apocalyptic number.

117663818 is a deficient number, since it is larger than the sum of its proper divisors (61823542).

117663818 is an equidigital number, since it uses as much as digits as its factorization.

117663818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997212.

The product of its digits is 48384, while the sum is 41.

The square root of 117663818 is about 10847.2954232841. The cubic root of 117663818 is about 490.0205711203.

The spelling of 117663818 in words is "one hundred seventeen million, six hundred sixty-three thousand, eight hundred eighteen".