686873535806 has 16 divisors (see below), whose sum is σ = 1047835372416. Its totient is φ = 337616130456.

The previous prime is 686873535797. The next prime is 686873535809. The reversal of 686873535806 is 608535378686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686873535809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5197496 + ... + 5328011.

It is an arithmetic number, because the mean of its divisors is an integer number (65489710776).

Almost surely, 2^686873535806 is an apocalyptic number.

686873535806 is a deficient number, since it is larger than the sum of its proper divisors (360961836610).

686873535806 is a wasteful number, since it uses less digits than its factorization.

686873535806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526063.

The product of its (nonzero) digits is 174182400, while the sum is 65.

The spelling of 686873535806 in words is "six hundred eighty-six billion, eight hundred seventy-three million, five hundred thirty-five thousand, eight hundred six".