687448398 has 48 divisors (see below), whose sum is σ = 1701495936. Its totient is φ = 181303200.

The previous prime is 687448387. The next prime is 687448417. The reversal of 687448398 is 893844786.

687448398 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 23 ways as a sum of consecutive naturals, for example, 41328 + ... + 55523.

It is an arithmetic number, because the mean of its divisors is an integer number (35447832).

Almost surely, 2^687448398 is an apocalyptic number.

687448398 is an abundant number, since it is smaller than the sum of its proper divisors (1014047538).

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

687448398 is a wasteful number, since it uses less digits than its factorization.

687448398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96889 (or 96876 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 687448398 is about 26219.2371742581. The cubic root of 687448398 is about 882.5650016991.

The spelling of 687448398 in words is "six hundred eighty-seven million, four hundred forty-eight thousand, three hundred ninety-eight".