Order 504.
36 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | Dic63 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | C9×Dic7 | C2 | 1 | 1 | yes | maximal, characteristic |
| 3 | C7×Dic9 | C2 | 1 | 1 | yes | maximal, characteristic |
| 4 | #4248 | — | 3 | 1 | no | maximal |
| 5 | C2×C7×C9 | C22 | 1 | 1 | yes | characteristic |
| 6 | Dic21 | — | 3 | 1 | no | — |
| 7 | C3×Dic7 | D3 | 1 | 1 | yes | characteristic |
| 8 | C7×Dic3 | — | 3 | 1 | no | — |
| 9 | Dic18 | — | 7 | 1 | no | maximal, Hall |
| 10 | C7×C9 | Q8 | 1 | 1 | yes | characteristic, complemented, Hall |
| 11 | Dic14 | — | 9 | 1 | no | Hall |
| 12 | C2×C3×C7 | C2×D3 | 1 | 1 | yes | characteristic |
| 13 | C4×C9 | — | 7 | 1 | no | — |
| 14 | Dic9 | — | 7 | 1 | no | — |
| 15 | Dic9 | D7 | 1 | 1 | yes | characteristic |
| 16 | C4×C7 | — | 9 | 1 | no | — |
| 17 | Dic7 | — | 9 | 1 | no | — |
| 18 | Dic7 | D9 | 1 | 1 | yes | characteristic |
| 19 | Dic6 | — | 21 | 1 | no | — |
| 20 | C3×C7 | Dic6 | 1 | 1 | yes | characteristic |
| 21 | C2×C9 | C2×D7 | 1 | 1 | yes | characteristic |
| 22 | C2×C7 | C2×D9 | 1 | 1 | yes | characteristic |
| 23 | C3×C4 | — | 7 | 1 | no | — |
| 24 | Dic3 | — | 3 | 1 | no | — |
| 25 | Dic3 | — | 21 | 1 | no | — |
| 26 | C9 | Dic14 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 27 | Q8 | — | 63 | 1 | no | Sylow |
| 28 | C7 | Dic18 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 29 | C2×C3 | D3×D7 | 1 | 1 | yes | characteristic |
| 30 | C4 | — | 7 | 1 | no | — |
| 31 | C4 | — | 9 | 1 | no | — |
| 32 | C4 | — | 63 | 1 | no | — |
| 33 | C3 | #4248 | 1 | 1 | yes | characteristic |
| 34 | C2 | D7×D9 | 1 | 1 | yes | characteristic |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C2 | D7×D9 |
| commutator, Fitting, cosocle | C2×C7×C9 | C22 |
| Frattini | C2×C3 | D3×D7 |
| socle, prime radical | C2×C3×C7 | C2×D3 |
| hypocenter | C7×C9 | Q8 |
| LCS | G ▷ C2×C7×C9 ▷ C7×C9 | |
| UCS | C1 ◁ C2 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 10. C7×C9 | Q8 | semidirect |
| 26. C9 | Dic14 | semidirect |
| 28. C7 | Dic18 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| Dic63 | 2 |
| C9×Dic7 | 2 |
| C7×Dic9 | 2 |
| #4248 | 3 |
| Dic18 | 7 |