Number rhymes with:
outnumber, cumber, encumber, humber, lumber, macumber, mccumber, outnumber, slumber, unencumber
Number sounds like:
naber, napier, napora, napper, nappier, navar, navarra, navarre, navarro, neeper, neibauer, neubauer, neuber, never, newbauer, newberry, newbery, newbury, niebauer, niebuhr, niebur, nienaber, nipper, niver, noboru, nonmember, npr, nuber, nufer, nuffer, nuhfer