117887 has 8 divisors (see below), whose sum is σ = 147072. Its totient is φ = 91800.

The previous prime is 117883. The next prime is 117889. The reversal of 117887 is 788711.

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

It is a cyclic number.

It is not a de Polignac number, because 117887 - 2² = 117883 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 117887.

It is not an unprimeable number, because it can be changed into a prime (117881) 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, 689 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (18384).

2¹¹⁷⁸⁸⁷ is an apocalyptic number.

117887 is a deficient number, since it is larger than the sum of its proper divisors (29185).

117887 is a wasteful number, since it uses less digits than its factorization.

117887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549.

The product of its digits is 3136, while the sum is 32.

The square root of 117887 is about 343.3467634914. The cubic root of 117887 is about 49.0330195323.

Subtracting from 117887 its sum of digits (32), we obtain a triangular number (117855 = T₄₈₅).

The spelling of 117887 in words is "one hundred seventeen thousand, eight hundred eighty-seven".