686504536 has 16 divisors (see below), whose sum is σ = 1293299640. Its totient is φ = 341624640.

The previous prime is 686504531. The next prime is 686504543. The reversal of 686504536 is 635405686.

686504536 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 = 686504492 and 686504501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686504531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201661 + ... + 205036.

Almost surely, 2^686504536 is an apocalyptic number.

It is an amenable number.

686504536 is a deficient number, since it is larger than the sum of its proper divisors (606795104).

686504536 is a wasteful number, since it uses less digits than its factorization.

686504536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406914 (or 406910 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 686504536 is about 26201.2315741074. The cubic root of 686504536 is about 882.1608981064.

The spelling of 686504536 in words is "six hundred eighty-six million, five hundred four thousand, five hundred thirty-six".