1391716 has 6 divisors (see below), whose sum is σ = 2435510. Its totient is φ = 695856.

The previous prime is 1391713. The next prime is 1391729. The reversal of 1391716 is 6171931.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 78400 = 1146^2 + 280^2 .

It is not an unprimeable number, because it can be changed into a prime (1391713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173961 + ... + 173968.

2^1391716 is an apocalyptic number.

It is an amenable number.

1391716 is a deficient number, since it is larger than the sum of its proper divisors (1043794).

1391716 is a wasteful number, since it uses less digits than its factorization.

1391716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347933 (or 347931 counting only the distinct ones).

The product of its digits is 1134, while the sum is 28.

The square root of 1391716 is about 1179.7101338888. The cubic root of 1391716 is about 111.6478094937.

The spelling of 1391716 in words is "one million, three hundred ninety-one thousand, seven hundred sixteen".