870520 has 32 divisors (see below), whose sum is σ = 2239200. Its totient is φ = 298368.

The previous prime is 870517. The next prime is 870533. The reversal of 870520 is 25078.

It is a junction number, because it is equal to n+sod(n) for n = 870491 and 870500.

It is a congruent number.

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, 1275 + ... + 1834.

It is an arithmetic number, because the mean of its divisors is an integer number (69975).

2⁸⁷⁰⁵²⁰ is an apocalyptic number.

It is an amenable number.

870520 is an abundant number, since it is smaller than the sum of its proper divisors (1368680).

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

870520 is a wasteful number, since it uses less digits than its factorization.

870520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127 (or 3123 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 870520 is about 933.0166129282. The cubic root of 870520 is about 95.4830429584.

Adding to 870520 its reverse (25078), we get a palindrome (895598).

The spelling of 870520 in words is "eight hundred seventy thousand, five hundred twenty".