Roosevelt Island has never been this funny! Buddy Hackett’s one-bedroom, 1½-bathroom co-op at the Rivercross, 531 Main Street, is currently on the market for $690,000.

Buddy, one of Roosevelt Island’s most famous residents, was a beloved actor and comedian best known for “The Music Man,” “It’s a Mad, Mad, Mad, Mad World “and “The Love Bug.” The corner unit comes with great river views.

The current owner is Buddy’s son, the actor Sandy Hackett. The listing broker is Suzanne Wolf, of Corcoran.