The intellect devourer’s feature Body Thief says the following:
While inside a creature, the intellect devourer has total cover against attacks and other effects originating outside its host. The intellect devourer retains its Intelligence, Wisdom, and Charisma scores, as well as its understanding of Deep Speech, its telepathy, and its traits. It otherwise adopts the target’s statistics.
Does it retain its 60ft blindsight and immunity to the blinded condition while inside the creature?