117866 has 8 divisors (see below), whose sum is σ = 202080. Its totient is φ = 50508.

The previous prime is 117851. The next prime is 117877. The reversal of 117866 is 668711.

117866 = T₁₈₀ + T₁₈₁ + ... + T₁₈₆.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (25260).

2¹¹⁷⁸⁶⁶ is an apocalyptic number.

117866 is a deficient number, since it is larger than the sum of its proper divisors (84214).

117866 is an equidigital number, since it uses as much as digits as its factorization.

117866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428.

The product of its digits is 2016, while the sum is 29.

The square root of 117866 is about 343.3161808013. The cubic root of 117866 is about 49.0301078328.

The spelling of 117866 in words is "one hundred seventeen thousand, eight hundred sixty-six".