689086057912 has 128 divisors (see below), whose sum is σ = 1531876147200. Its totient is φ = 284534819712.

The previous prime is 689086057909. The next prime is 689086057927. The reversal of 689086057912 is 219750680986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31704793 + ... + 31726519.

It is an arithmetic number, because the mean of its divisors is an integer number (11967782400).

Almost surely, 2^689086057912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689086057912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765938073600).

689086057912 is an abundant number, since it is smaller than the sum of its proper divisors (842790089288).

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

689086057912 is a wasteful number, since it uses less digits than its factorization.

689086057912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21993 (or 21989 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 689086057912 in words is "six hundred eighty-nine billion, eighty-six million, fifty-seven thousand, nine hundred twelve".