Hmmm a interesting one! "69cuan" doesn't seem like a familiar word in any general tongue I know.
It could be a abbreviation specific to a certain industry, or perhaps it's a neologism. Perhaps provide some context about where you saw this term, I could try to help. That might be There's a chance turn into sunny skies by evening. If you decide to go outside the fresh air, make sure to some sunscreen. Lingo Word Every online community,