689133331986 has 128 divisors (see below), whose sum is σ = 1593321062400. Its totient is φ = 196658679360.

The previous prime is 689133331967. The next prime is 689133331987.

689133331986 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (689133331987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43043995 + ... + 43060001.

It is an arithmetic number, because the mean of its divisors is an integer number (12447820800).

Almost surely, 2^689133331986 is an apocalyptic number.

689133331986 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 689133331986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796660531200).

689133331986 is an abundant number, since it is smaller than the sum of its proper divisors (904187730414).

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

689133331986 is a wasteful number, since it uses less digits than its factorization.

689133331986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16484.

The product of its digits is 15116544, while the sum is 60.

The spelling of 689133331986 in words is "six hundred eighty-nine billion, one hundred thirty-three million, three hundred thirty-one thousand, nine hundred eighty-six".