117806866 has 8 divisors (see below), whose sum is σ = 176851260. Its totient is φ = 58856448.

The previous prime is 117806833. The next prime is 117806867. The reversal of 117806866 is 668608711.

It can be written as a sum of positive squares in 2 ways, for example, as 116748025 + 1058841 = 10805^2 + 1029^2 .

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

It is not an unprimeable number, because it can be changed into a prime (117806867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20271 + ... + 25426.

Almost surely, 2^117806866 is an apocalyptic number.

117806866 is a deficient number, since it is larger than the sum of its proper divisors (59044394).

117806866 is a wasteful number, since it uses less digits than its factorization.

117806866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46988.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 117806866 is about 10853.8871377954. The cubic root of 117806866 is about 490.2190690578.

The spelling of 117806866 in words is "one hundred seventeen million, eight hundred six thousand, eight hundred sixty-six".