686826734876 has 12 divisors (see below), whose sum is σ = 1204623730800. Its totient is φ = 342648526080.

The previous prime is 686826734843. The next prime is 686826734887. The reversal of 686826734876 is 678437628686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191208320 + ... + 191211911.

It is an arithmetic number, because the mean of its divisors is an integer number (100385310900).

Almost surely, 2^686826734876 is an apocalyptic number.

It is an amenable number.

686826734876 is a deficient number, since it is larger than the sum of its proper divisors (517796995924).

686826734876 is a wasteful number, since it uses less digits than its factorization.

686826734876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382420684 (or 382420682 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 71.

The spelling of 686826734876 in words is "six hundred eighty-six billion, eight hundred twenty-six million, seven hundred thirty-four thousand, eight hundred seventy-six".