It is a tau number, because it is divible by the number of its divisors (144).
669600 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2669600 is an apocalyptic number.
669600 is a gapful number since it is divisible by the number (60) 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 669600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
669600 is a wasteful number, since it uses less digits than its factorization.
669600 is an odious number, because the sum of its binary digits is odd.
The square root of 669600 is about 818.2909018192. The cubic root of 669600 is about 87.4859841496.
The spelling of 669600 in words is "six hundred sixty-nine thousand, six hundred".