"""nを素因数分解""" """2以上の整数n => [[素因数, 指数], ...]の2次元リスト""" def factorization(n): arr = [] temp = n for i in range(2, int(-(-n**0.5//1))+1): if temp%i==0: cnt=0 while temp%i==0: cnt+=1 temp //= i arr.append([i, cnt]) if temp!=1: arr.append([temp, 1]) if arr==[]: arr.append([n, 1]) return arr n=int(input()) l=factorization(n) if len(l)>=3: exit(print("YES")) else: cnt=0 for x in l: cnt+=x[1] if cnt>=3: print("YES") else: print("NO")