686500530 has 32 divisors (see below), whose sum is σ = 1662724800. Its totient is φ = 181386432.

The previous prime is 686500523. The next prime is 686500531. The reversal of 686500530 is 35005686.

686500530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 686500491 and 686500500.

It is not an unprimeable number, because it can be changed into a prime (686500531) 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, 101700 + ... + 108239.

It is an arithmetic number, because the mean of its divisors is an integer number (51960150).

Almost surely, 2^686500530 is an apocalyptic number.

686500530 is an abundant number, since it is smaller than the sum of its proper divisors (976224270).

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

686500530 is a wasteful number, since it uses less digits than its factorization.

686500530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210058.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 686500530 is about 26201.1551272077. The cubic root of 686500530 is about 882.1591821948.

The spelling of 686500530 in words is "six hundred eighty-six million, five hundred thousand, five hundred thirty".