In number theory, a nontotient is a positive integer n which is not a totient number: it is not in the range of Euler`s totient function φ, that is, the equation φ(x) = n has no solution x. In other words, n is a nontotient if there is no integer x that has exactly n coprimes below it. All odd numbers are nontotients, except 1, since it has the....