Number 7 is ruled by Ketu (the South Node), representing spirituality, liberation, and past karma. People with this number are deep thinkers, seekers of truth, and spiritually inclined. They are analytical and prefer solitude for contemplation. In Vedic tradition, Ketu represents moksha (liberation) and detachment from the material world. Number 7 is sacred in many traditions — the 7 chakras, 7 saptarishis.