687108832 has 48 divisors (see below), whose sum is σ = 1433602800. Its totient is φ = 323599360.

The previous prime is 687108827. The next prime is 687108871. The reversal of 687108832 is 238801786.

It is a happy number.

It is a congruent number.

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, 29019 + ... + 47077.

It is an arithmetic number, because the mean of its divisors is an integer number (29866725).

Almost surely, 2^687108832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687108832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716801400).

687108832 is an abundant number, since it is smaller than the sum of its proper divisors (746493968).

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

687108832 is a wasteful number, since it uses less digits than its factorization.

687108832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18139 (or 18131 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 687108832 is about 26212.7608618398. The cubic root of 687108832 is about 882.4196630692.

The spelling of 687108832 in words is "six hundred eighty-seven million, one hundred eight thousand, eight hundred thirty-two".