Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

An electrophotographic photosensitive member having excellent cleaning performance, a process cartridge, and an electrophotographic apparatus. The peripheral surface of the member has flat portions having a width e (μm) satisfying 0.1 e 25 and a plurality of groove portions having a width w (μm) satisfying 0.1 w 25 and a depth d (μm) satisfying 0.1 d 3.0, the flat and groove portions at an angle (°) satisfying 80 100 with respect to the axial direction of the member. The sum esum (μm) of the widths e of the flat portions per each width of 100 μm in the axial direction of the peripheral surface satisfying 5 esum 75, and e /eAv satisfying e /eAv 0.46, where eAv (μm) is the average value of the widths e of the flat portions, and e is the standard deviation thereof.