86543 has 4 divisors (see below), whose sum is σ = 88920.
Its totient is φ = 84168.
The previous prime is 86539. The next prime is 86561. The reversal of 86543 is 34568.
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 86543 - 22 = 86539 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is a plaindrome in base 14.
It is a nialpdrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (86533) 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, 1133 + ... + 1206.
It is an arithmetic number, because the mean of its divisors is an integer number (22230).
286543 is an apocalyptic number.
86543 is a deficient number, since it is larger than the sum of its proper divisors (2377).
86543 is a wasteful number, since it uses less digits than its factorization.
86543 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2376.
The product of its digits is 2880, while the sum is 26.
The square root of 86543 is about 294.1819165075.
The cubic root of 86543 is about 44.2327541933.
The spelling of 86543 in words is "eighty-six thousand, five hundred forty-three".