Commentary for Genesis 5:21

וַֽיְחִ֣י חֲנ֔וֹךְ חָמֵ֥שׁ וְשִׁשִּׁ֖ים שָׁנָ֑ה וַיּ֖וֹלֶד אֶת־מְתוּשָֽׁלַח׃

And Enoch lived sixty and five years, and begot Methuselah.

The Midrash of Philo