871611 has 8 divisors (see below), whose sum is σ = 1251600. Its totient is φ = 536352.

The previous prime is 871597. The next prime is 871613. The reversal of 871611 is 116178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 871611 - 2¹¹ = 869563 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 871611.

It is not an unprimeable number, because it can be changed into a prime (871613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11136 + ... + 11213.

It is an arithmetic number, because the mean of its divisors is an integer number (156450).

2⁸⁷¹⁶¹¹ is an apocalyptic number.

871611 is a deficient number, since it is larger than the sum of its proper divisors (379989).

871611 is a wasteful number, since it uses less digits than its factorization.

871611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22365.

The product of its digits is 336, while the sum is 24.

The square root of 871611 is about 933.6010925443. The cubic root of 871611 is about 95.5229151082.

Adding to 871611 its reverse (116178), we get a palindrome (987789).

The spelling of 871611 in words is "eight hundred seventy-one thousand, six hundred eleven".