117136861 has 8 divisors (see below), whose sum is σ = 122814144. Its totient is φ = 111508320.

The previous prime is 117136841. The next prime is 117136883. The reversal of 117136861 is 168631711.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117136861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117136801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7216 + ... + 16921.

It is an arithmetic number, because the mean of its divisors is an integer number (15351768).

Almost surely, 2^117136861 is an apocalyptic number.

It is an amenable number.

117136861 is a deficient number, since it is larger than the sum of its proper divisors (5677283).

117136861 is a wasteful number, since it uses less digits than its factorization.

117136861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24371.

The product of its digits is 6048, while the sum is 34.

The square root of 117136861 is about 10822.9783793557. The cubic root of 117136861 is about 489.2879578858.

The spelling of 117136861 in words is "one hundred seventeen million, one hundred thirty-six thousand, eight hundred sixty-one".