1 Kings 10:14

Solomon received 666 talents ¹  of gold per year, ² 

1Ki 9:28

¹ tn The Hebrew term כִּכָּר (kikkar, “circle”) refers generally to something that is round. When used of metals it can refer to a disk-shaped weight made of the metal or to a standard unit of weight, generally regarded as a talent. Since the accepted weight for a talent of metal is about 75 pounds, this would have amounted to about 50,000 pounds of gold (cf. NCV); CEV, NLT “twenty-five tons”; TEV “almost 23,000 kilogrammes.”

² tn Heb “the weight of the gold which came to Solomon in one year was 666 talents of gold.”