117860205 has 32 divisors (see below), whose sum is σ = 199647360. Its totient is φ = 59270400.

The previous prime is 117860189. The next prime is 117860209. The reversal of 117860205 is 502068711.

It is not a de Polignac number, because 117860205 - 2⁴ = 117860189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117860209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15555 + ... + 21855.

It is an arithmetic number, because the mean of its divisors is an integer number (6238980).

Almost surely, 2^117860205 is an apocalyptic number.

117860205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117860205 is a deficient number, since it is larger than the sum of its proper divisors (81787155).

117860205 is a wasteful number, since it uses less digits than its factorization.

117860205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 117860205 is about 10856.3439978659. The cubic root of 117860205 is about 490.2930428154.

The spelling of 117860205 in words is "one hundred seventeen million, eight hundred sixty thousand, two hundred five".