1316691 has 6 divisors (see below), whose sum is σ = 1901900. Its totient is φ = 877788.

The previous prime is 1316677. The next prime is 1316699. The reversal of 1316691 is 1966131.

It is not a de Polignac number, because 1316691 - 2¹³ = 1308499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73141 + ... + 73158.

2^1316691 is an apocalyptic number.

1316691 is a deficient number, since it is larger than the sum of its proper divisors (585209).

1316691 is a wasteful number, since it uses less digits than its factorization.

1316691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146305 (or 146302 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1316691 is about 1147.4715682752. The cubic root of 1316691 is about 109.6043915959.

The spelling of 1316691 in words is "one million, three hundred sixteen thousand, six hundred ninety-one".