711671 has 4 divisors (see below), whose sum is σ = 753552. Its totient is φ = 669792.

The previous prime is 711653. The next prime is 711679. The reversal of 711671 is 176117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176117 = 29 ⋅6073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711671 is a prime.

It is a super-2 number, since 2×711671² = 1012951224482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711679) 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, 20915 + ... + 20948.

It is an arithmetic number, because the mean of its divisors is an integer number (188388).

2⁷¹¹⁶⁷¹ is an apocalyptic number.

711671 is a deficient number, since it is larger than the sum of its proper divisors (41881).

711671 is a wasteful number, since it uses less digits than its factorization.

711671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41880.

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

The square root of 711671 is about 843.6059506665. The cubic root of 711671 is about 89.2811460367.

Adding to 711671 its reverse (176117), we get a palindrome (887788).

The spelling of 711671 in words is "seven hundred eleven thousand, six hundred seventy-one".