866713 has 2 divisors, whose sum is σ = 866714. Its totient is φ = 866712.

The previous prime is 866707. The next prime is 866717. The reversal of 866713 is 317668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831744 + 34969 = 912^2 + 187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866713 is a prime.

It is not a weakly prime, because it can be changed into another prime (866717) 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, 433356 + 433357.

It is an arithmetic number, because the mean of its divisors is an integer number (433357).

2⁸⁶⁶⁷¹³ is an apocalyptic number.

It is an amenable number.

866713 is a deficient number, since it is larger than the sum of its proper divisors (1).

866713 is an equidigital number, since it uses as much as digits as its factorization.

866713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 866713 is about 930.9742209105. The cubic root of 866713 is about 95.3436492116.

The spelling of 866713 in words is "eight hundred sixty-six thousand, seven hundred thirteen".