68543 has 2 divisors, whose sum is σ = 68544.
Its totient is φ = 68542.
The previous prime is 68539. The next prime is 68567. The reversal of 68543 is 34586.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 68543 - 22 = 68539 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a plaindrome in base 12.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (68443) 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 as a sum of consecutive naturals, namely, 34271 + 34272.
It is an arithmetic number, because the mean of its divisors is an integer number (34272).
268543 is an apocalyptic number.
68543 is a deficient number, since it is larger than the sum of its proper divisors (1).
68543 is an equidigital number, since it uses as much as digits as its factorization.
68543 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2880, while the sum is 26.
The square root of 68543 is about 261.8071809558.
The cubic root of 68543 is about 40.9249071653.
The spelling of 68543 in words is "sixty-eight thousand, five hundred forty-three".