709

709 is a prime number.

709 has a representation as a sum of two squares: 709 = 15² + 22².

709 is the hypotenuse of a primitive Pythagorean triple: 709² = 259² + 660².

709 is the smallest prime of the form 59n + 1.

709 is the smallest prime whose cube is the sum of three prime cubes: 709³ = 193³ + 461³ + 631³.

709 is the number on General Esperanza's cargo plane in the movie Die Hard 2: Die Harder.

Source: Prime Curios!