671711 has 4 divisors (see below), whose sum is σ = 676752. Its totient is φ = 666672.

The previous prime is 671701. The next prime is 671717. The reversal of 671711 is 117176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671711 - 2⁶ = 671647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671717) 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, 2315 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (169188).

2⁶⁷¹⁷¹¹ is an apocalyptic number.

671711 is a deficient number, since it is larger than the sum of its proper divisors (5041).

671711 is a wasteful number, since it uses less digits than its factorization.

671711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040.

The product of its digits is 294, while the sum is 23.

The square root of 671711 is about 819.5797703702. The cubic root of 671711 is about 87.5778246379.

Adding to 671711 its reverse (117176), we get a palindrome (788887).

It can be divided in two parts, 6 and 71711, that added together give a palindrome (71717).

The spelling of 671711 in words is "six hundred seventy-one thousand, seven hundred eleven".