#include <stdio.h>

int main(void) {
	unsigned long long int n,l,i,c,k=0,t=0;
	scanf("%llu",&n);
	l = n;
	for(i = 2;i*i <= l;i++){
		c = 0;
		if(!(n % i)){
			while(!(n % i)){
				c++;
				if(c >= 3 || (c >= 2 && k >= 1) || t == 1 || k >= 2){printf("YES\n");return 0;}
				else if(c >= 2){t = 1;}
				n/=i;
			}
			k++;
		}
	}
	if(n != 1){
		if(t == 1 || k >= 2){printf("YES\n");return 0;}
	}
	printf("NO\n");
	return 0;
}