"Six women were there" - is six a noun or an adjective?

Six women were there.

Is the number "six" a noun or an adjective here? Or maybe "six women" is a compound noun?

Answer

When six is followed by a noun, it is an adjective.

The six women put on an outstanding performance

A six-woman team was set up to deal with the problem

Six women were arrested by police

When no noun follows, the six is itself a noun or pronoun.

He wrote a six on the cover of his book (noun)

When he played a six, we knew the game was over (noun- playing cards)

The six from Atlanta played well (noun - a hockey team has six players)

He hit the ball for a six - (noun - cricket term for a stroke that wins six runs)

set the table for six (pronoun representing six people)