687055588 has 24 divisors (see below), whose sum is σ = 1270281600. Its totient is φ = 324622368.

The previous prime is 687055583. The next prime is 687055613. The reversal of 687055588 is 885550786.

687055588 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (687055583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57558 + ... + 68461.

It is an arithmetic number, because the mean of its divisors is an integer number (52928400).

Almost surely, 2^687055588 is an apocalyptic number.

It is an amenable number.

687055588 is a deficient number, since it is larger than the sum of its proper divisors (583226012).

687055588 is a wasteful number, since it uses less digits than its factorization.

687055588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126099 (or 126097 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 52.

The square root of 687055588 is about 26211.7452299537. The cubic root of 687055588 is about 882.3968696076.

The spelling of 687055588 in words is "six hundred eighty-seven million, fifty-five thousand, five hundred eighty-eight".