Input device and input system

An input device includes two fixed electrodes and an operating member. The two fixed electrodes is configured to be placed to overlap with specific line electrodes of a plurality of line electrodes. The operating member is movable with respect to the two fixed electrodes. The operating member is movable within a movable range including a plurality of click points. Electrical states of the two fixed electrodes change among a plurality of states in accordance with a movement of the operating member. A divisor of an integer N does not include 4, where the integer N is a total number of times of change in the electrical states of the at least two fixed electrodes when the operating member moves from one to a next one of adjacent two click points of the plurality of click points.