Bathsheba (בַּת־שֶׁבַע) combines the Hebrew bat (daughter) and sheva (oath or seven) — meaning "daughter of the oath" or "daughter of seven." In 2 Samuel 11, Bathsheba was the wife of Uriah the Hittite who became King David's wife and mother of Solomon.
Bathsheba Everdene is the heroine of Thomas Hardy's Far from the Madding Crowd (1874).
Bathsheba does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Bathsheba reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.