871108861 has 8 divisors (see below), whose sum is σ = 995968064. Its totient is φ = 746353440.

The previous prime is 871108859. The next prime is 871108937. The reversal of 871108861 is 168801178.

It is a happy number.

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

It is not a de Polignac number, because 871108861 - 2¹ = 871108859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871108811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7035 + ... + 42328.

It is an arithmetic number, because the mean of its divisors is an integer number (124496008).

Almost surely, 2^871108861 is an apocalyptic number.

It is an amenable number.

871108861 is a deficient number, since it is larger than the sum of its proper divisors (124859203).

871108861 is a wasteful number, since it uses less digits than its factorization.

871108861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51891.

The product of its (nonzero) digits is 21504, while the sum is 40.

The square root of 871108861 is about 29514.5533762583. The cubic root of 871108861 is about 955.0456785804.

The spelling of 871108861 in words is "eight hundred seventy-one million, one hundred eight thousand, eight hundred sixty-one".