1317689 has 8 divisors (see below), whose sum is σ = 1361088. Its totient is φ = 1275120.

The previous prime is 1317683. The next prime is 1317691. The reversal of 1317689 is 9867131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4619 + ... + 4895.

It is an arithmetic number, because the mean of its divisors is an integer number (170136).

2^1317689 is an apocalyptic number.

It is an amenable number.

1317689 is a deficient number, since it is larger than the sum of its proper divisors (43399).

1317689 is an equidigital number, since it uses as much as digits as its factorization.

1317689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415.

The product of its digits is 9072, while the sum is 35.

The square root of 1317689 is about 1147.9063550656. The cubic root of 1317689 is about 109.6320765420.

The spelling of 1317689 in words is "one million, three hundred seventeen thousand, six hundred eighty-nine".