687025072 has 20 divisors (see below), whose sum is σ = 1331642200. Its totient is φ = 343375488.

The previous prime is 687025067. The next prime is 687025093. The reversal of 687025072 is 270520786.

687025072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 41743 + ... + 55825.

It is an arithmetic number, because the mean of its divisors is an integer number (66582110).

Almost surely, 2^687025072 is an apocalyptic number.

It is an amenable number.

687025072 is a deficient number, since it is larger than the sum of its proper divisors (644617128).

687025072 is a wasteful number, since it uses less digits than its factorization.

687025072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17140 (or 17134 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 687025072 is about 26211.1631180305. The cubic root of 687025072 is about 882.3838053462.

The spelling of 687025072 in words is "six hundred eighty-seven million, twenty-five thousand, seventy-two".