The number 0.
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It reminds me nothing in particular that I can remember
They are factors of that number
any number 1 more than a number in the 3 times table i.e 4, 7, 10, 13...
3,456 x 4 = 13,824 13,824 + 1 = 13,825 13,825 / 7 = 1,975 Answer: 13,825 remainder not reminder, by the way
721 is one such number.