857711 has 2 divisors, whose sum is σ = 857712. Its totient is φ = 857710.

The previous prime is 857707. The next prime is 857713. The reversal of 857711 is 117758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 857711 - 2² = 857707 is a prime.

Together with 857713, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 857711.

It is not a weakly prime, because it can be changed into another prime (857713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428855 + 428856.

It is an arithmetic number, because the mean of its divisors is an integer number (428856).

2⁸⁵⁷⁷¹¹ is an apocalyptic number.

857711 is a deficient number, since it is larger than the sum of its proper divisors (1).

857711 is an equidigital number, since it uses as much as digits as its factorization.

857711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1960, while the sum is 29.

The square root of 857711 is about 926.1268811561. The cubic root of 857711 is about 95.0124083515.

The spelling of 857711 in words is "eight hundred fifty-seven thousand, seven hundred eleven".