699

699 = 3 x 233.

699 has the representation 699 = 3⁶ - 30.

699 is a number n such that n² + 2 is a prime: 699² + 2 = 488603.

For 699, the sum of the digits is eight times the number of digits: 6 + 9 + 9 = 8 x 3.

699 is the smallest number whose sum of digits is 24.

The submarine USS Jacksonville (SSN-699) is nicknamed "The Bold One."

Source: On-Line Encyclopedia of Integer Sequences