91.1429
79.75
No: 638 divided by 6 is 106 with remainder 2.
10.6333
No. a prime number can only be divided by itself and 1 whereas 638 is even and therefore can be divided by 2.
106.3333
1.9875
0.0047
1, 2, 11, 22, 29, 58, 319, 638.
675
17.2432
127.6