1306997 has 2 divisors, whose sum is σ = 1306998. Its totient is φ = 1306996.

The previous prime is 1306979. The next prime is 1307051. The reversal of 1306997 is 7996031.

Together with previous prime (1306979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 244036 = 1031^2 + 494^2 .

It is an emirp because it is prime and its reverse (7996031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1306997 - 2⁶ = 1306933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653498 + 653499.

It is an arithmetic number, because the mean of its divisors is an integer number (653499).

2^1306997 is an apocalyptic number.

It is an amenable number.

1306997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306997 is an equidigital number, since it uses as much as digits as its factorization.

1306997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1306997 is about 1143.2396949022. The cubic root of 1306997 is about 109.3347451318.

The spelling of 1306997 in words is "one million, three hundred six thousand, nine hundred ninety-seven".