N = int(input())
N += 1
tbl = [0] * N

for i in range(2, N):
    if tbl[i] == 0:
        for j in range(i * 2, N, i):
            tbl[j] = -1

judge = 'NO'
for i in range(len(tbl)):
    if tbl[i] == -1:
        if N % i == 0:
            judge = 'YES'
            break

print(judge)