General aviation pilot reported a near miss with a UAS while in cruise flight. The reporter stated they did not take evasive action and contacted the TRACON upon arrival.

Narrative

Established in cruise while returning from a to visit an airport restaurant. Mostly clear skies with 10+ miles of visibility and mostly calm winds. While at 3;500 feet and cruising eastbound at approximately 140 KIAS; the pilot flying remarked 'what is that? Is that a plane?'. He was looking forward and pointed to the 11 o'clock position off our nose. I quickly scanned both onboard TCAS systems and did not observe any traffic targets depicted. I then checked ForeFlight on my phone which was synced to a GPS device and also did not observe any traffic. I then clearly observed a white quadrocopter drone pass off our left wing and within approximately 100 feet of the aircraft. Given our speed; we initially thought the drone was traveling westbound; however it was more than likely stationary as we flew past. The event occurred so quickly; there was no time for any evasive action to be initiated. The visibility was good and we clearly observed this small white drone with four rotors and a small camera suspended from the center of the device. We immediately radioed this in to NYC TRACON who was providing us flight following at the time; making our best effort to give a traffic advisory for any other aircraft in the area. Upon arrival at our destination airport; we made contact with TRACON via phone to provide further details.