870450 has 48 divisors (see below), whose sum is σ = 2470080. Its totient is φ = 198720.

The previous prime is 870437. The next prime is 870461. The reversal of 870450 is 54078.

It is a self number, because there is not a number n which added to its sum of digits gives 870450.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870450.

It is an unprimeable number.

870450 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 636 + ... + 1464.

It is an arithmetic number, because the mean of its divisors is an integer number (51460).

2⁸⁷⁰⁴⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235040).

870450 is an abundant number, since it is smaller than the sum of its proper divisors (1599630).

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

870450 is a wasteful number, since it uses less digits than its factorization.

870450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 870450 is about 932.9790994444. The cubic root of 870450 is about 95.4804835716.

The spelling of 870450 in words is "eight hundred seventy thousand, four hundred fifty".