864530 has 8 divisors (see below), whose sum is σ = 1556172. Its totient is φ = 345808.

The previous prime is 864511. The next prime is 864533. The reversal of 864530 is 35468.

It can be written as a sum of positive squares in 2 ways, for example, as 797449 + 67081 = 893^2 + 259^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 864530.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864530.

It is not an unprimeable number, because it can be changed into a prime (864533) by changing a digit.

864530 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, 43217 + ... + 43236.

2⁸⁶⁴⁵³⁰ is an apocalyptic number.

864530 is a deficient number, since it is larger than the sum of its proper divisors (691642).

864530 is a wasteful number, since it uses less digits than its factorization.

864530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86460.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 864530 is about 929.8010539895. The cubic root of 864530 is about 95.2635341965.

Adding to 864530 its reverse (35468), we get a palindrome (899998).

The spelling of 864530 in words is "eight hundred sixty-four thousand, five hundred thirty".