117636843 has 4 divisors (see below), whose sum is σ = 156849128. Its totient is φ = 78424560.

The previous prime is 117636829. The next prime is 117636877. The reversal of 117636843 is 348636711.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 117636843 - 2⁸ = 117636587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117636823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19606138 + ... + 19606143.

It is an arithmetic number, because the mean of its divisors is an integer number (39212282).

Almost surely, 2^117636843 is an apocalyptic number.

117636843 is a deficient number, since it is larger than the sum of its proper divisors (39212285).

117636843 is an equidigital number, since it uses as much as digits as its factorization.

117636843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39212284.

The product of its digits is 72576, while the sum is 39.

The square root of 117636843 is about 10846.0519545132. The cubic root of 117636843 is about 489.9831217288.

The spelling of 117636843 in words is "one hundred seventeen million, six hundred thirty-six thousand, eight hundred forty-three".