Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

An electrophotographic photosensitive member, comprising:na conductive support;an intermediate layer; anda photosensitive layer,the intermediate layer and the photosensitive layer being provided on the conductive support in the stated order,wherein:the intermediate layer contains a polyolefin resin and an organic electron- transporting substance;the polyolefin resin comprises:a repeating structural unit represented by the following formula (11);a repeating structural unit represented by one of the following formulas (21) and (22); anda repeating structural unit represented by any one of the following formulas (31), (32), (33), and (34), andthe mass ratio (%) of the repeating structural unit represented by the formula (11) in the polyolefin resin is 75 mass % or more and 94 mass % or less; andthe organic electron-transporting substance comprises a compound selected from the group consisting of an imide-based compound represented by the following formula (1), a benzimidazole-based compound represented by the following formula (2), a benzimidazole-based compound represented by the following formula (3), a benzimidazole-based compound represented by the following formula (4), a quinone-based compound represented by the following formula (5), a quinone-based compound represented by the following formula (6), a quinone-based compound represented by the following formula (7), a cyclopentadienylidene-based compound represented by the following formula (8), and derivatives of the compounds: