I clean and lube the chain every 2 or 3 weeks. The rest of the bike doesn't get that dirty but occasionally I'll blast it with the power washer. It deep cleans the cassette and everything in about a minute.

I can't say I've ever cleaned the brakes, unless power washing them counts. I do blast the nozzle in between the pads and the rim during the wash. Also the inside of the brake levers, derailleur mechanism, etc.