65 is. It's called the "average" of 60 and 70.
65
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Oh, dude, halfway between 60 and 80 is like 70. You just add 60 and 80 together, which is 140, and divide by 2 to get 70. It's like the Goldilocks number, not too big, not too small, just right in the middle.
All are composite except 61 and 67. Composite numbers: 60, 62, 63, 64, 65, 66, 68, 69, 70
61 and 67 are the only prime numbers between 60 and 70.
63
66