695

695 = 5 x 139.

695, 697, and 699 are all semiprimes (A092125). 694 and 695 are consecutive semiprimes (A109373).

695 is the maximum number of sections into which 15 slices can cut a torus (A033600).

695 uses the same three digits in base 3 (221202) and base 7 (2012).

695!! + 2 is a prime (A076185).

695 divides 96³ - 1.

Source: What's Special About This Number?