My Suggestions

atandatũ

num.

  1. six. Six. The cardinal number equal to 6; used in counting and enumeration.

Example: na Ozemu wa atandatũ, na Daudi wa mũgwanja; (Ozem, the sixth, and David, the seventh.); Na andũ a Netofa maarĩ mĩrongo ĩtano na atandatũ. (people of Netophah, fifty-six;)