1316671 has 2 divisors, whose sum is σ = 1316672. Its totient is φ = 1316670.

The previous prime is 1316669. The next prime is 1316677. The reversal of 1316671 is 1766131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1316671 - 2¹ = 1316669 is a prime.

Together with 1316669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658335 + 658336.

It is an arithmetic number, because the mean of its divisors is an integer number (658336).

2^1316671 is an apocalyptic number.

1316671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316671 is an equidigital number, since it uses as much as digits as its factorization.

1316671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 1316671 is about 1147.4628534293. The cubic root of 1316671 is about 109.6038366444.

The spelling of 1316671 in words is "one million, three hundred sixteen thousand, six hundred seventy-one".