6681

6681 is a natural number that follows 6680 and precedes 6682. It is an odd integer and appears in various mathematical contexts such as counting, modular arithmetic, and factorization.

In mathematics, 6681 is composite. It factors as 3 × 17 × 131, indicating it has three prime factors and is not a prime number. The divisibility by 3 is evident from the sum of its digits (6 + 6 + 8 + 1 = 21). The number is not a perfect square or a cube, and its approximate square root is 81.7.

Beyond pure arithmetic, 6681 may be used as a designation in sequential numbering schemes in science and cataloging. For example, minor planets and other celestial objects receive a number once their orbits are well determined, though the number alone is a label rather than a description of any intrinsic property of the object.

Overall, 6681 is primarily notable as a composite four-digit number with a straightforward prime factorization, serving as a representative example of how integers are classified and used in numerical systems.