871466640 has 160 divisors (see below), whose sum is σ = 2981059200. Its totient is φ = 208834560.

The previous prime is 871466633. The next prime is 871466669. The reversal of 871466640 is 46664178.

It is a junction number, because it is equal to n+sod(n) for n = 871466592 and 871466601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233106 + ... + 236814.

It is an arithmetic number, because the mean of its divisors is an integer number (18631620).

Almost surely, 2^871466640 is an apocalyptic number.

871466640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871466640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490529600).

871466640 is an abundant number, since it is smaller than the sum of its proper divisors (2109592560).

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

871466640 is a wasteful number, since it uses less digits than its factorization.

871466640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825 (or 3819 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 871466640 is about 29520.6138147566. The cubic root of 871466640 is about 955.1764117696.

The spelling of 871466640 in words is "eight hundred seventy-one million, four hundred sixty-six thousand, six hundred forty".