870730 has 24 divisors (see below), whose sum is σ = 1824228. Its totient is φ = 298368.

The previous prime is 870703. The next prime is 870731. The reversal of 870730 is 37078.

It can be written as a sum of positive squares in 2 ways, for example, as 866761 + 3969 = 931^2 + 63^2 .

It is a junction number, because it is equal to n+sod(n) for n = 870695 and 870704.

It is not an unprimeable number, because it can be changed into a prime (870731) by changing a digit.

870730 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 11 ways as a sum of consecutive naturals, for example, 399 + ... + 1378.

2⁸⁷⁰⁷³⁰ is an apocalyptic number.

870730 is an abundant number, since it is smaller than the sum of its proper divisors (953498).

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

870730 is a wasteful number, since it uses less digits than its factorization.

870730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 870730 is about 933.1291443311. The cubic root of 870730 is about 95.4907202957.

It can be divided in two parts, 870 and 730, that added together give a square (1600 = 40²).

The spelling of 870730 in words is "eight hundred seventy thousand, seven hundred thirty".