As Tin said, there are 96 tone wheels. But five of these wheels are used for counterbalance and so produce no frequency. Recognize that each wheel represents an individual note/frequency. No frequency dividers are used and this is a purely electro-mechanical affair. This allows 91 actual notes to be played.
Pulling the 16' drawbar (left-most bar) produces a "subharmonic" one octave lower that the note actually played on the keyboard. With just this bar pulled, the lowest C on the keyboard (and pedal board) is 32.7 Hz. Each subsequent C is one octave higher and double the frequency.
The keyboard has 5 octaves of 12 notes and a C on top for 61 notes (requiring 61 tone wheels). Push in the 16' drawbar and pull out the 8' bar and everything goes up one octave. This requires 12 more wheels - now 73 are accounted for. Push in the 8' drawbar and pull out the 4' bar and everything goes up another octave requiring 12 more wheels - now 85 are accounted for leaving 6 wheels. These 6 wheel takes you up to F#8. F#8 has a frequency of 5,919.92 Hz.
Any note on the Hammond above this note folds back down an octave. This is most discernable with the 1' drawbar that does a double fold over the two top octaves and you really hear it in music when the organ is going up a scale and all of a sudden sounds lower again. It just sounds like the 1' drawbar drops out at the G.
I think that my D (produced sometime between 1939 and 1942) had less foldover. I think the balance wheels were actually used as tone generators.
Anywho, the top frequency generated by the tone wheels is F#8 that has a frequency of ~5,919.92 Hz.
Recognize that these are sine waves and have no harmonics (to speak of). Any other type of wave would have its own set of harmonics and when you are "building" a wave form of your own chosen harmonics that is not what you want.
Any frequencys above this F#8 are associated with "noise" such as key click which is also "undesireable."