686683587158 has 8 divisors (see below), whose sum is σ = 1030707069840. Its totient is φ = 343114563880.

The previous prime is 686683587127. The next prime is 686683587169. The reversal of 686683587158 is 851785386686.

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

It is a junction number, because it is equal to n+sod(n) for n = 686683587091 and 686683587100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113611073 + ... + 113617116.

It is an arithmetic number, because the mean of its divisors is an integer number (128838383730).

Almost surely, 2^686683587158 is an apocalyptic number.

686683587158 is a deficient number, since it is larger than the sum of its proper divisors (344023482682).

686683587158 is a wasteful number, since it uses less digits than its factorization.

686683587158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227229702.

The product of its digits is 464486400, while the sum is 71.

The spelling of 686683587158 in words is "six hundred eighty-six billion, six hundred eighty-three million, five hundred eighty-seven thousand, one hundred fifty-eight".