687583542588 has 12 divisors (see below), whose sum is σ = 1604361599400. Its totient is φ = 229194514192.

The previous prime is 687583542577. The next prime is 687583542589. The reversal of 687583542588 is 885245385786.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×687583542588² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687583542589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28649314263 + ... + 28649314286.

It is an arithmetic number, because the mean of its divisors is an integer number (133696799950).

Almost surely, 2^687583542588 is an apocalyptic number.

It is an amenable number.

687583542588 is an abundant number, since it is smaller than the sum of its proper divisors (916778056812).

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

687583542588 is a wasteful number, since it uses less digits than its factorization.

687583542588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57298628556 (or 57298628554 counting only the distinct ones).

The product of its digits is 516096000, while the sum is 69.

The spelling of 687583542588 in words is "six hundred eighty-seven billion, five hundred eighty-three million, five hundred forty-two thousand, five hundred eighty-eight".