115643 has 4 divisors (see below), whose sum is σ = 126168. Its totient is φ = 105120.

The previous prime is 115637. The next prime is 115657. The reversal of 115643 is 346511.

115643 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115643 - 2¹⁴ = 99259 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 115643.

It is not an unprimeable number, because it can be changed into a prime (115603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5246 + ... + 5267.

It is an arithmetic number, because the mean of its divisors is an integer number (31542).

2¹¹⁵⁶⁴³ is an apocalyptic number.

115643 is a deficient number, since it is larger than the sum of its proper divisors (10525).

115643 is a wasteful number, since it uses less digits than its factorization.

115643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524.

The product of its digits is 360, while the sum is 20.

The square root of 115643 is about 340.0632294148. The cubic root of 115643 is about 48.7199069152.

The spelling of 115643 in words is "one hundred fifteen thousand, six hundred forty-three".