855711 has 16 divisors (see below), whose sum is σ = 1300320. Its totient is φ = 555840.

The previous prime is 855709. The next prime is 855713. The reversal of 855711 is 117558.

It is an interprime number because it is at equal distance from previous prime (855709) and next prime (855713).

It is not a de Polignac number, because 855711 - 2¹ = 855709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (81270).

2⁸⁵⁵⁷¹¹ is an apocalyptic number.

855711 is a deficient number, since it is larger than the sum of its proper divisors (444609).

855711 is a wasteful number, since it uses less digits than its factorization.

855711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 817 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 855711 is about 925.0464853184. The cubic root of 855711 is about 94.9385012867.

The spelling of 855711 in words is "eight hundred fifty-five thousand, seven hundred eleven".