871987068 has 72 divisors (see below), whose sum is σ = 2243535840. Its totient is φ = 285505920.

The previous prime is 871987049. The next prime is 871987073. The reversal of 871987068 is 860789178.

It is a super-2 number, since 2×871987068² = 1520722893518473248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 993846 + ... + 994722.

It is an arithmetic number, because the mean of its divisors is an integer number (31160220).

Almost surely, 2^871987068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871987068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121767920).

871987068 is an abundant number, since it is smaller than the sum of its proper divisors (1371548772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871987068 is a wasteful number, since it uses less digits than its factorization.

871987068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The square root of 871987068 is about 29529.4271532653. The cubic root of 871987068 is about 955.3665133775.

The spelling of 871987068 in words is "eight hundred seventy-one million, nine hundred eighty-seven thousand, sixty-eight".