import math
A=int(input())
a=math.sqrt(A)
L=list()
for i in range(2,int(a)+2):
    if A%i==0:
        L.append(i)
        L.append(A//i)
L=sorted(L)
for i in L:
    if i%2==1:
        print("YES")
        exit()
print("NO")