Order 1728.
326 conjugacy classes of subgroups.
The subgroup lattice has 254 nodes — too large to display as a diagram.
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 36. C9×Dic6 | Q8 | semidirect |
| 39. #4851 | C9 | direct (N × H) |
| 153. C3×C9 | #475 | semidirect |
| 174. Dic6 | Q8×C9 | semidirect |
| 219. C9 | #4851 | direct (N × H) |
| 248. C3 | C9×#475 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C9×#869 | 2 |
| C4×C9×Dic6 | 2 |
| C3×C9×C4⋊C8 | 2 |
| C9×#817 | 2 |
| C9×#816 | 2 |
| C3×#4851 | 3 |
| C9×#475 | 3 |