745 = 5 x 149.
745 has two representations as a sum of two squares: 745 = 42 + 272 = 132 + 242.
745 is the hypotenuse of two Pythagorean triples: 7452 = 2162 + 7132 = 4072 + 6242.
745 is a divisor of 444 - 1.
745 is the smallest number whose square begins with three 5s: 7452 = 555,025.
The German submarine U-745 was lost at sea on Jan. 30, 1945.
