import std;

void main(){
  ulong n = readln.chomp.to!ulong;
  ulong t = n;
  int c = 0;
  for(ulong p = 2; p <= t && p ^^ 2 < n; p += 1 + p % 2){
    if(t % p) continue;
    c++;
    while(t % p == 0){
      t /= p;
    }
  }
  writeln(c <= 2 ? "Yes" : "No"); 
}