Dropping the final letter Nun (נ/ן = 50) corresponding to the Greek grammatical suffix -on (Neron vs Latin Nero) mathematically reduces the sum by exactly 50, explaining the ancient textual dispute witnessed by Irenaeus and confirmed in Oxyrhynchus Papyrus 115.
Ancient riddle composers routinely crafted phrases or names conforming to a preselected target integer. Test which ancient vocabulary roots or letter partitions hit 666 or any custom sum.