689689008 has 60 divisors (see below), whose sum is σ = 1936582648. Its totient is φ = 229132800.

The previous prime is 689689001. The next prime is 689689019. The reversal of 689689008 is 800986986.

It is not an unprimeable number, because it can be changed into a prime (689689001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36408 + ... + 52008.

Almost surely, 2^689689008 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 689689008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968291324).

689689008 is an abundant number, since it is smaller than the sum of its proper divisors (1246893640).

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

689689008 is a wasteful number, since it uses less digits than its factorization.

689689008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15922 (or 15913 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 689689008 is about 26261.9307744118. The cubic root of 689689008 is about 883.5228139229.

The spelling of 689689008 in words is "six hundred eighty-nine million, six hundred eighty-nine thousand, eight".