870740 has 48 divisors (see below), whose sum is σ = 2095632. Its totient is φ = 301056.

The previous prime is 870739. The next prime is 870743. The reversal of 870740 is 47078.

It can be written as a sum of positive squares in 8 ways, for example, as 35344 + 835396 = 188^2 + 914^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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 870740.

It is not an unprimeable number, because it can be changed into a prime (870743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4322 + ... + 4518.

It is an arithmetic number, because the mean of its divisors is an integer number (43659).

2⁸⁷⁰⁷⁴⁰ 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 870740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047816).

870740 is an abundant number, since it is smaller than the sum of its proper divisors (1224892).

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

870740 is a wasteful number, since it uses less digits than its factorization.

870740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 870740 is about 933.1345026308. The cubic root of 870740 is about 95.4910858524.

The spelling of 870740 in words is "eight hundred seventy thousand, seven hundred forty".