An estimated three quarters of a million ultra-Orthodox Jews packed the Israeli city of Bnei Brak for the funeral Sunday of influential rabbi Chaim Kanievsky, known to followers as the "Prince of Torah".Authorities had voiced fears of disaster from massive overcrowding as a sea of men and boys in black suits filled streets, sidewalks and balconies in the city near Tel Aviv to mourn the Belarusian-born Kanievsky, who died Friday aged 94.