67543 has 4 divisors (see below), whose sum is σ = 77200. Its totient is φ = 57888.

The previous prime is 67537. The next prime is 67547. The reversal of 67543 is 34576.

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 67543 - 2⁵ = 67511 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 7³ + 5³ + 4⁸ + 3⁵ .

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67547) 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, 4818 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (19300).

2⁶⁷⁵⁴³ is an apocalyptic number.

67543 is a deficient number, since it is larger than the sum of its proper divisors (9657).

67543 is an equidigital number, since it uses as much as digits as its factorization.

67543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9656.

The product of its digits is 2520, while the sum is 25.

The square root of 67543 is about 259.8903614988. The cubic root of 67543 is about 40.7249083364.

The spelling of 67543 in words is "sixty-seven thousand, five hundred forty-three".