857713 has 2 divisors, whose sum is σ = 857714. Its totient is φ = 857712.

The previous prime is 857711. The next prime is 857723. The reversal of 857713 is 317758.

857713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788544 + 69169 = 888^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 857713 - 2¹ = 857711 is a prime.

Together with 857711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (857711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428856 + 428857.

It is an arithmetic number, because the mean of its divisors is an integer number (428857).

2⁸⁵⁷⁷¹³ is an apocalyptic number.

It is an amenable number.

857713 is a deficient number, since it is larger than the sum of its proper divisors (1).

857713 is an equidigital number, since it uses as much as digits as its factorization.

857713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 857713 is about 926.1279609212. The cubic root of 857713 is about 95.0124822011.

The spelling of 857713 in words is "eight hundred fifty-seven thousand, seven hundred thirteen".