Currently, public sub counts are abbreviated in most but not all places across YouTube. In August, we’ll make this more consistent by always showing abbreviated sub counts publicly. Creators: You’ll still see your full sub count in Studio! Learn more → http://yt.be/help/abbrev-count …pic.twitter.com/pmaKk4EU4k
"We noticed you could either have all the information or only a small portion, we're making this more consistent by eliminating the possibility of seeing all the information. You're welcome!" Youtube is run by monkeys.