688885016 has 32 divisors (see below), whose sum is σ = 1396751040. Its totient is φ = 317280768.

The previous prime is 688884997. The next prime is 688885031. The reversal of 688885016 is 610588886.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47495 + ... + 60278.

It is an arithmetic number, because the mean of its divisors is an integer number (43648470).

Almost surely, 2^688885016 is an apocalyptic number.

It is an amenable number.

688885016 is an abundant number, since it is smaller than the sum of its proper divisors (707866024).

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

688885016 is a wasteful number, since it uses less digits than its factorization.

688885016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107843 (or 107839 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The square root of 688885016 is about 26246.6191346619. The cubic root of 688885016 is about 883.1793637259.

The spelling of 688885016 in words is "six hundred eighty-eight million, eight hundred eighty-five thousand, sixteen".