687050856 has 64 divisors (see below), whose sum is σ = 1915531200. Its totient is φ = 228170304.

The previous prime is 687050851. The next prime is 687050863. The reversal of 687050856 is 658050786.

It is not an unprimeable number, because it can be changed into a prime (687050851) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 54091 + ... + 65573.

It is an arithmetic number, because the mean of its divisors is an integer number (29930175).

Almost surely, 2^687050856 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 687050856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957765600).

687050856 is an abundant number, since it is smaller than the sum of its proper divisors (1228480344).

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

687050856 is a wasteful number, since it uses less digits than its factorization.

687050856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775 (or 11765 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 687050856 is about 26211.6549649197. The cubic root of 687050856 is about 882.3948438077.

The spelling of 687050856 in words is "six hundred eighty-seven million, fifty thousand, eight hundred fifty-six".