All are composite except 61 and 67.
Composite numbers: 60, 62, 63, 64, 65, 66, 68, 69, 70
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66
Between 60 and 70 the composite numbers are: 62, 63, 64, 65, 66, 68, 69. 60 and 70 are also composite.
66>> 6+6=12
70
60, 62, 63, 64, 65, 66, 68, 69, 70