687938615080 has 32 divisors (see below), whose sum is σ = 1548037324800. Its totient is φ = 275144256576.

The previous prime is 687938615059. The next prime is 687938615107. The reversal of 687938615080 is 80516839786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615720 + ... + 1324759.

It is an arithmetic number, because the mean of its divisors is an integer number (48376166400).

Almost surely, 2^687938615080 is an apocalyptic number.

It is an amenable number.

687938615080 is an abundant number, since it is smaller than the sum of its proper divisors (860098709720).

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

687938615080 is a wasteful number, since it uses less digits than its factorization.

687938615080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949353 (or 1949349 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 687938615080 in words is "six hundred eighty-seven billion, nine hundred thirty-eight million, six hundred fifteen thousand, eighty".