import sys
from itertools import count


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    n = int(input())
    for i in count(1):
        if i * i * i > n:
            return 'No'
        if i * i * i == n:
            return 'Yes'


if __name__ == '__main__':
    ret = main()
    if ret is not None:
        print(ret)