786 = 2 x 3 x 131. It is the product of three distinct Sophie Germain primes (A157346).
786 is a number n such that n2 (617796) has the property that the sum of its digits (36 = 62) and the product of its digits are nonzero squares (A061268).
786 is an even number that is not the sum of a pair of twin primes (A007534).
786 and the 786th prime (6029) have only the digit 6 in common (A107937).
786 is the sum of six positive cubes in exactly three ways (A048931).
Source: On-Line Encyclopedia of Integer Sequences