687268695812 has 12 divisors (see below), whose sum is σ = 1255012401216. Its totient is φ = 328693724040.

The previous prime is 687268695803. The next prime is 687268695871. The reversal of 687268695812 is 218596862786.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3735155864 + ... + 3735156047.

It is an arithmetic number, because the mean of its divisors is an integer number (104584366768).

Almost surely, 2^687268695812 is an apocalyptic number.

It is an amenable number.

687268695812 is a deficient number, since it is larger than the sum of its proper divisors (567743705404).

687268695812 is a wasteful number, since it uses less digits than its factorization.

687268695812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470311938 (or 7470311936 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 68.

The spelling of 687268695812 in words is "six hundred eighty-seven billion, two hundred sixty-eight million, six hundred ninety-five thousand, eight hundred twelve".