A composite number is a positive integer that has at least one positive divisor other than one and itself. In simpler terms, it has factors other than just 1 and the number itself.
Let's examine the numbers given:
- 27: This number is composite because it can be factored into \(3 \times 9\) or \(1 \times 27\).
- 67: This number is prime because it has no divisors other than 1 and 67.
- 47: This number is prime because it has no divisors other than 1 and 47.
- 37: This number is prime because it has no divisors other than 1 and 37.
Among the listed numbers, the composite number is 27.