1316669 has 2 divisors, whose sum is σ = 1316670. Its totient is φ = 1316668.

The previous prime is 1316657. The next prime is 1316671. The reversal of 1316669 is 9666131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 375769 = 970^2 + 613^2 .

It is an emirp because it is prime and its reverse (9666131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1316669 is a prime.

It is a super-2 number, since 2×1316669² = 3467234511122, which contains 22 as substring.

Together with 1316671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658334 + 658335.

It is an arithmetic number, because the mean of its divisors is an integer number (658335).

2^1316669 is an apocalyptic number.

It is an amenable number.

1316669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316669 is an equidigital number, since it uses as much as digits as its factorization.

1316669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 1316669 is about 1147.4619819410. The cubic root of 1316669 is about 109.6037811490.

The spelling of 1316669 in words is "one million, three hundred sixteen thousand, six hundred sixty-nine".