12 groups of order 664.
| SmallGroups | group |
|---|---|
| (664, 1) | C83⋊C8 #10620376 |
| (664, 2) | C8×C83 #10620377 |
| (664, 3) | Dic166 #10620378 |
| (664, 4) | C4×D83 #10620379 |
| (664, 5) | D332 #10620380 |
| (664, 6) | C2×Dic83 #10620381 |
| (664, 7) | C22⋊D83 #10620382 |
| (664, 8) | C2×C4×C83 #10620383 |
| (664, 9) | D4×C83 #10620384 |
| (664, 10) | Q8×C83 #10620385 |
| (664, 11) | C22×D83 #10620386 |
| (664, 12) | C23×C83 #10620387 |