117635643 has 6 divisors (see below), whose sum is σ = 169918164. Its totient is φ = 78423756.

The previous prime is 117635603. The next prime is 117635647. The reversal of 117635643 is 346536711.

117635643 is a `hidden beast` number, since 1 + 1 + 7 + 6 + 3 + 5 + 643 = 666.

It is not a de Polignac number, because 117635643 - 2⁹ = 117635131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117635598 and 117635607.

It is not an unprimeable number, because it can be changed into a prime (117635647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6535305 + ... + 6535322.

It is an arithmetic number, because the mean of its divisors is an integer number (28319694).

Almost surely, 2^117635643 is an apocalyptic number.

117635643 is a deficient number, since it is larger than the sum of its proper divisors (52282521).

117635643 is a wasteful number, since it uses less digits than its factorization.

117635643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13070633 (or 13070630 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 117635643 is about 10845.9966347035. The cubic root of 117635643 is about 489.9814556358.

The spelling of 117635643 in words is "one hundred seventeen million, six hundred thirty-five thousand, six hundred forty-three".