687457676244 has 48 divisors (see below), whose sum is σ = 1633762446848. Its totient is φ = 224934655968.

The previous prime is 687457676237. The next prime is 687457676249. The reversal of 687457676244 is 442676754786.

687457676244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687457676249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283152 + ... + 1738215.

Almost surely, 2^687457676244 is an apocalyptic number.

It is an amenable number.

687457676244 is an abundant number, since it is smaller than the sum of its proper divisors (946304770604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687457676244 is a wasteful number, since it uses less digits than its factorization.

687457676244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021724 (or 3021722 counting only the distinct ones).

The product of its digits is 379330560, while the sum is 66.

The spelling of 687457676244 in words is "six hundred eighty-seven billion, four hundred fifty-seven million, six hundred seventy-six thousand, two hundred forty-four".