Which is a prime number

60

67

65

63

Use the rule of divisibility:

60 is composite because it is even so it can be divided by 2

67 is prime because none if the divisiblility rules work on it

65 is composite because it has a five by the end which means it can be divided by 5

63 is composite because the sum of the digits equal to nine which can be divided by 3 and nine