How many servants did Abraham have?

Answer 1

Tens of thousands.

In those days, everything was based on clan and family. As late as the time of Nehemiah (1500 years after Abraham), families were recorded as having thousands of members, since ties were remembered for a good number of generations.

Abraham taught belief in One God wherever he went; this is what his "calling out in the name of the Lord" means (Genesis ch.12). He taught in Ur, in Haran, and throughout Canaan; and gradually, many people joined him for further study, until they numbered in the tens of thousands (Maimonides, Laws against idolatry, ch.1-2). Because society was family-based, and in order to assure themselves some formal place or status in Abraham's entourage, most of these followers declared themselves his servants and lent a hand in his works.

Answer 2

It is difficult to know the exact number, but pharaohs were considered divine rulers and everything they did reflected their power and status. Thus, they tended to have a large retinue of servants, as well as a large number of slaves. Servants were responsible for such tasks as running the royal household and taking care of the royal family (cooking, cleaning the palace, making clothing for the pharaoh and his inner circle, dressing the pharaoh and his wife, performing the proper rituals to show respect for the royal deities, planning any gatherings the pharaoh wanted to hold, etc). Slaves did manual labor, tilled the fields, took care of the animals, etc. Given the pomp that was part of a royal lifestyle, it required the work of many people to make sure things ran smoothly and that the pharaoh's orders were always carried out to his satisfaction.