8691313 has 2 divisors, whose sum is σ = 8691314. Its totient is φ = 8691312.

The previous prime is 8691299. The next prime is 8691359. The reversal of 8691313 is 3131968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5276209 + 3415104 = 2297^2 + 1848^2 .

It is a cyclic number.

It is not a de Polignac number, because 8691313 - 2⁵ = 8691281 is a prime.

It is not a weakly prime, because it can be changed into another prime (8691373) 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, 4345656 + 4345657.

It is an arithmetic number, because the mean of its divisors is an integer number (4345657).

Almost surely, 2^8691313 is an apocalyptic number.

It is an amenable number.

8691313 is a deficient number, since it is larger than the sum of its proper divisors (1).

8691313 is an equidigital number, since it uses as much as digits as its factorization.

8691313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 8691313 is about 2948.1032885569. The cubic root of 8691313 is about 205.6025342615.

The spelling of 8691313 in words is "eight million, six hundred ninety-one thousand, three hundred thirteen".