870

870 = 2 x 3 x 5 x 29.

870 is a pronic number (the product of two consecutive integers): 870 = 29 x 30.

870 is the sum its digits plus the cubes of its digits: 870 = 8 + 7 + 0 + 8³ + 7³ + 0³.

870 is 606 in base 12 and 303 in base 17.

870 is the sum of 10 consecutive primes: 870 = 67 + 71 + 73 + 79 + 83 + 89 + 97 + 101 + 103 + 107.

870 is the magic constant (or sum) for a 12 x 12 normal magic square.

Source: Number Gossip