711085 has 4 divisors (see below), whose sum is σ = 853308. Its totient is φ = 568864.

The previous prime is 711049. The next prime is 711089. The reversal of 711085 is 580117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580117 = 163 ⋅3559.

It can be written as a sum of positive squares in 2 ways, for example, as 522729 + 188356 = 723^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 711085 - 2⁹ = 710573 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

711085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71104 + ... + 71113.

It is an arithmetic number, because the mean of its divisors is an integer number (213327).

2⁷¹¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

711085 is a deficient number, since it is larger than the sum of its proper divisors (142223).

711085 is a wasteful number, since it uses less digits than its factorization.

711085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142222.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 711085 is about 843.2585605851. The cubic root of 711085 is about 89.2566341869.

It can be divided in two parts, 71 and 1085, that added together give a square (1156 = 34²).

The spelling of 711085 in words is "seven hundred eleven thousand, eighty-five".