687041816 has 16 divisors (see below), whose sum is σ = 1289669040. Its totient is φ = 343130080.

The previous prime is 687041807. The next prime is 687041821. The reversal of 687041816 is 618140786.

687041816 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 3 ways as a sum of consecutive naturals, for example, 41315 + ... + 55506.

It is an arithmetic number, because the mean of its divisors is an integer number (80604315).

Almost surely, 2^687041816 is an apocalyptic number.

It is an amenable number.

687041816 is a deficient number, since it is larger than the sum of its proper divisors (602627224).

687041816 is a wasteful number, since it uses less digits than its factorization.

687041816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97714 (or 97710 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 687041816 is about 26211.4825219788. The cubic root of 687041816 is about 882.3909736990.

The spelling of 687041816 in words is "six hundred eighty-seven million, forty-one thousand, eight hundred sixteen".