#include<cstdio>


typedef long long ll;


#define SIEVE_MAX 10000000

char sieve[SIEVE_MAX+1];

void sieve_init(void)
{
	int i, j;

	sieve[0]=sieve[1]=1;

	for(i=4;i<=SIEVE_MAX;i+=2) sieve[i]=1;

	for(i=3;i<=SIEVE_MAX;i+=2)
	{
		if(sieve[i]) continue;
		for(j=i*3;j<=SIEVE_MAX;j+=i*2)
		{
			sieve[j]=1;
		}
	}
}


int solve(ll x)
{
	ll i;
	int c=0;

	for(i=2;i*i<=x;i++)
	{
		if(sieve[i]) continue;
		for(;x%i==0;x/=i)
		{
			c++;
			if(c>=3) return 1;
		}
	}
	if(x>1) c++;

	return c>=3;
}


int main(void)
{
	ll n;

	sieve_init();
	while(scanf("%lld", &n)==1)
	{
		printf("%s\n", solve(n)?"YES":"NO");
	}

	return 0;
}