689410920928 has 96 divisors (see below), whose sum is σ = 1513166054400. Its totient is φ = 307270047744.

The previous prime is 689410920899. The next prime is 689410920943. The reversal of 689410920928 is 829029014986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53192913 + ... + 53205871.

It is an arithmetic number, because the mean of its divisors is an integer number (15762146400).

Almost surely, 2^689410920928 is an apocalyptic number.

689410920928 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689410920928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756583027200).

689410920928 is an abundant number, since it is smaller than the sum of its proper divisors (823755133472).

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

689410920928 is a wasteful number, since it uses less digits than its factorization.

689410920928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18152 (or 18144 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 689410920928 in words is "six hundred eighty-nine billion, four hundred ten million, nine hundred twenty thousand, nine hundred twenty-eight".