687106854 has 64 divisors (see below), whose sum is σ = 1747898880. Its totient is φ = 195994080.

The previous prime is 687106841. The next prime is 687106919. The reversal of 687106854 is 458601786.

It is a happy number.

687106854 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321369 + ... + 323499.

It is an arithmetic number, because the mean of its divisors is an integer number (27310920).

Almost surely, 2^687106854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687106854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873949440).

687106854 is an abundant number, since it is smaller than the sum of its proper divisors (1060792026).

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

687106854 is a wasteful number, since it uses less digits than its factorization.

687106854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 687106854 is about 26212.7231320975. The cubic root of 687106854 is about 882.4188163194.

The spelling of 687106854 in words is "six hundred eighty-seven million, one hundred six thousand, eight hundred fifty-four".