687663088 has 20 divisors (see below), whose sum is σ = 1522682800. Its totient is φ = 294712704.

The previous prime is 687663083. The next prime is 687663091. The reversal of 687663088 is 880366786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687663083) 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, 3069813 + ... + 3070036.

It is an arithmetic number, because the mean of its divisors is an integer number (76134140).

Almost surely, 2^687663088 is an apocalyptic number.

It is an amenable number.

687663088 is an abundant number, since it is smaller than the sum of its proper divisors (835019712).

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

687663088 is a wasteful number, since it uses less digits than its factorization.

687663088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139864 (or 6139858 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 687663088 is about 26223.3309859751. The cubic root of 687663088 is about 882.6568670956.

The spelling of 687663088 in words is "six hundred eighty-seven million, six hundred sixty-three thousand, eighty-eight".