13 groups of order 1647.
| SmallGroups | group |
|---|---|
| (1647, 1) | C27×C61 #13110053 |
| (1647, 2) | C3×C9×C61 #13110054 |
| (1647, 3) | H(3,𝔽3)×C61 #13110055 |
| (1647, 4) | 3−1+2×C61 #13110056 |
| (1647, 5) | C33×C61 #13110057 |
| (1647, 6) | C61⋊C27 #13110058 |
| (1647, 7) | C9×C61⋊C3 #13110059 |
| (1647, 8) | C3×C61⋊C9 #13110060 |
| (1647, 9) | C32⋊(C61⋊C3) #13110061 |
| (1647, 10) | #13110062 |
| (1647, 11) | #13110063 |
| (1647, 12) | #13110064 |
| (1647, 13) | C32×C61⋊C3 #13110065 |