871587871 has 32 divisors (see below), whose sum is σ = 1107532800. Its totient is φ = 666247680.

The previous prime is 871587869. The next prime is 871587877. The reversal of 871587871 is 178785178.

It is not a de Polignac number, because 871587871 - 2¹ = 871587869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871587877) 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 31 ways as a sum of consecutive naturals, for example, 947950 + ... + 948868.

It is an arithmetic number, because the mean of its divisors is an integer number (34610400).

Almost surely, 2^871587871 is an apocalyptic number.

871587871 is a deficient number, since it is larger than the sum of its proper divisors (235944929).

871587871 is a wasteful number, since it uses less digits than its factorization.

871587871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its digits is 878080, while the sum is 52.

The square root of 871587871 is about 29522.6670712522. The cubic root of 871587871 is about 955.2207017122.

The spelling of 871587871 in words is "eight hundred seventy-one million, five hundred eighty-seven thousand, eight hundred seventy-one".