sastih
eka-ṣaṣṭiḥ — sixty-one; SB 6.6.29-31
pañca-ṣaṣṭiḥ — sixty-five; SB 9.24.9
ṣaṣṭiḥ — sixty; SB 12.11.49
catuḥ-ṣaṣṭiḥ — sixty-four; CC Madhya 23.84-85