687547689112 has 128 divisors (see below), whose sum is σ = 1390889102400. Its totient is φ = 318095769600.

The previous prime is 687547689107. The next prime is 687547689113. The reversal of 687547689112 is 211986745786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687547689113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83649339 + ... + 83657557.

Almost surely, 2^687547689112 is an apocalyptic number.

It is an amenable number.

687547689112 is an abundant number, since it is smaller than the sum of its proper divisors (703341413288).

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

687547689112 is a wasteful number, since it uses less digits than its factorization.

687547689112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477 (or 8473 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 64.

The spelling of 687547689112 in words is "six hundred eighty-seven billion, five hundred forty-seven million, six hundred eighty-nine thousand, one hundred twelve".