870500 has 24 divisors (see below), whose sum is σ = 1902264. Its totient is φ = 348000.

The previous prime is 870497. The next prime is 870517. The reversal of 870500 is 5078.

It can be written as a sum of positive squares in 4 ways, for example, as 268324 + 602176 = 518^2 + 776^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 1370.

It is an arithmetic number, because the mean of its divisors is an integer number (79261).

2⁸⁷⁰⁵⁰⁰ is an apocalyptic number.

It is an amenable number.

870500 is an abundant number, since it is smaller than the sum of its proper divisors (1031764).

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

870500 is a wasteful number, since it uses less digits than its factorization.

870500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 870500 is about 933.0058949439. The cubic root of 870500 is about 95.4823117190.

Adding to 870500 its reverse (5078), we get a palindrome (875578).

The spelling of 870500 in words is "eight hundred seventy thousand, five hundred".