855713 has 2 divisors, whose sum is σ = 855714. Its totient is φ = 855712.

The previous prime is 855709. The next prime is 855719. The reversal of 855713 is 317558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528529 + 327184 = 727^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 855713 - 2² = 855709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (855719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427856 + 427857.

It is an arithmetic number, because the mean of its divisors is an integer number (427857).

2⁸⁵⁵⁷¹³ is an apocalyptic number.

It is an amenable number.

855713 is a deficient number, since it is larger than the sum of its proper divisors (1).

855713 is an equidigital number, since it uses as much as digits as its factorization.

855713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 855713 is about 925.0475663446. The cubic root of 855713 is about 94.9385752512.

It can be divided in two parts, 85 and 5713, that multiplied together give a triangular number (485605 = T₉₈₅).

The spelling of 855713 in words is "eight hundred fifty-five thousand, seven hundred thirteen".