139968 = (1*3*9*9*6*8) * phi(1+3+9+9+6+8). Note that 139968 is the only six-digit number with this property. [Firoozbakht]
139968 = (1+3+9+9+6+8) * phi(1*3*9*9*6*8). Note that 139968 is the only six-digit number with this property. [Firoozbakht]