117783 has 12 divisors (see below), whose sum is σ = 177840. Its totient is φ = 74976.

The previous prime is 117779. The next prime is 117787. The reversal of 117783 is 387711.

It is an interprime number because it is at equal distance from previous prime (117779) and next prime (117787).

It is not a de Polignac number, because 117783 - 2² = 117779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78 + ... + 491.

It is an arithmetic number, because the mean of its divisors is an integer number (14820).

2¹¹⁷⁷⁸³ is an apocalyptic number.

117783 is a deficient number, since it is larger than the sum of its proper divisors (60057).

117783 is a wasteful number, since it uses less digits than its factorization.

117783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 595 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 117783 is about 343.1952796878. The cubic root of 117783 is about 49.0185963012.

It can be divided in two parts, 11778 and 3, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 117783 in words is "one hundred seventeen thousand, seven hundred eighty-three".