868570 has 8 divisors (see below), whose sum is σ = 1563444. Its totient is φ = 347424.

The previous prime is 868561. The next prime is 868577. The reversal of 868570 is 75868.

It can be written as a sum of positive squares in 2 ways, for example, as 851929 + 16641 = 923^2 + 129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (868577) by changing a digit.

868570 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 3 ways as a sum of consecutive naturals, for example, 43419 + ... + 43438.

2⁸⁶⁸⁵⁷⁰ is an apocalyptic number.

868570 is a deficient number, since it is larger than the sum of its proper divisors (694874).

868570 is a wasteful number, since it uses less digits than its factorization.

868570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86864.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 868570 is about 931.9710295927. The cubic root of 868570 is about 95.4116943649.

The spelling of 868570 in words is "eight hundred sixty-eight thousand, five hundred seventy".