117863 has 4 divisors (see below), whose sum is σ = 120648. Its totient is φ = 115080.

The previous prime is 117851. The next prime is 117877. The reversal of 117863 is 368711.

117863 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368711 = 7 ⋅52673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117863 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117833) 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, 1328 + ... + 1413.

It is an arithmetic number, because the mean of its divisors is an integer number (30162).

2¹¹⁷⁸⁶³ is an apocalyptic number.

117863 is a deficient number, since it is larger than the sum of its proper divisors (2785).

117863 is an equidigital number, since it uses as much as digits as its factorization.

117863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its digits is 1008, while the sum is 26.

The square root of 117863 is about 343.3118116232. The cubic root of 117863 is about 49.0296918475.

The spelling of 117863 in words is "one hundred seventeen thousand, eight hundred sixty-three".