Big Bang has 8 million subscribers on YouTube.
Big Bang's channel is the most-subscribed single K-pop group channel on YouTube (the most subscribed K-pop channel is SMTOWN, which is for all their groups). The group has just hit 8 million subscribers, an amazing feat for the group.
Big Bang's channel was started in October 2005, and has a total of 3,908,766,013 views (at time of writing).
Congratulations to Big Bang. If you still haven't subscribed to the channel, you can do so here.