Pattern · meaning · value tier · who it suits
A Ending in 6 is a number like 66 / 666. In Chinese number culture it means smoothness (6 = flow) — one of the classic "lucky number" types.
Value depends on: the digits (8, 9, 6 are prized; 4 lowers value), rarity (more repeats / cleaner pattern = pricier), and the carrier prefix. An 8-heavy Ending in 6 fetches the most.
Meaning "smoothness (6 = flow)". But a number type alone doesn't decide if it lifts or drains you — your full number's hexagram does.