Fatto matematico: 1630 is the number of 14-ominoes with a line of symmetry.
Trivia: 1630 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 17th is the day in 1948 that a Douglas DC-6 carrying United Airlines Flight 624 crashes near Mount Carmel, Pennsylvania, killing all 43 people on board.