870805500 has 192 divisors, whose sum is σ = 2669162496. Its totient is φ = 220320000.

The previous prime is 870805487. The next prime is 870805589. The reversal of 870805500 is 5508078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2836347 + ... + 2836653.

It is an arithmetic number, because the mean of its divisors is an integer number (13901888).

Almost surely, 2^870805500 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 870805500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334581248).

870805500 is an abundant number, since it is smaller than the sum of its proper divisors (1798356996).

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

870805500 is a wasteful number, since it uses less digits than its factorization.

870805500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 870805500 is about 29509.4137522249. The cubic root of 870805500 is about 954.9348017952.

The spelling of 870805500 in words is "eight hundred seventy million, eight hundred five thousand, five hundred".