689828928 has 28 divisors (see below), whose sum is σ = 1825172880. Its totient is φ = 229942912.

The previous prime is 689828927. The next prime is 689828929. The reversal of 689828928 is 829828986.

It is an interprime number because it is at equal distance from previous prime (689828927) and next prime (689828929).

It is not an unprimeable number, because it can be changed into a prime (689828927) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1796238 + ... + 1796621.

Almost surely, 2^689828928 is an apocalyptic number.

It is an amenable number.

689828928 is an abundant number, since it is smaller than the sum of its proper divisors (1135343952).

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

689828928 is a wasteful number, since it uses less digits than its factorization.

689828928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592874 (or 3592864 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 60.

The square root of 689828928 is about 26264.5945713997. The cubic root of 689828928 is about 883.5825578325.

The spelling of 689828928 in words is "six hundred eighty-nine million, eight hundred twenty-eight thousand, nine hundred twenty-eight".