1316709 has 8 divisors (see below), whose sum is σ = 1950720. Its totient is φ = 877788.

The previous prime is 1316699. The next prime is 1316717. The reversal of 1316709 is 9076131.

It is not a de Polignac number, because 1316709 - 2⁵ = 1316677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 48767 = 1316709 / (1 + 3 + 1 + 6 + 7 + 0 + 9).

It is an Ulam number.

1316709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316729) 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, 24357 + ... + 24410.

It is an arithmetic number, because the mean of its divisors is an integer number (243840).

2^1316709 is an apocalyptic number.

It is an amenable number.

1316709 is a deficient number, since it is larger than the sum of its proper divisors (634011).

1316709 is an equidigital number, since it uses as much as digits as its factorization.

1316709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48776 (or 48770 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1316709 is about 1147.4794115800. The cubic root of 1316709 is about 109.6048910475.

It can be divided in two parts, 131670 and 9, that multiplied together give a triangular number (1185030 = T₁₅₃₉).

The spelling of 1316709 in words is "one million, three hundred sixteen thousand, seven hundred nine".