687368243312 has 20 divisors (see below), whose sum is σ = 1362747507000. Its totient is φ = 335691467328.

The previous prime is 687368243291. The next prime is 687368243323. The reversal of 687368243312 is 213342863786.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499540187 + ... + 499541562.

It is an arithmetic number, because the mean of its divisors is an integer number (68137375350).

Almost surely, 2^687368243312 is an apocalyptic number.

It is an amenable number.

687368243312 is a deficient number, since it is larger than the sum of its proper divisors (675379263688).

687368243312 is a wasteful number, since it uses less digits than its factorization.

687368243312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999081800 (or 999081794 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 53.

The spelling of 687368243312 in words is "six hundred eighty-seven billion, three hundred sixty-eight million, two hundred forty-three thousand, three hundred twelve".