It is a happy number.
11662640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (80).
It is an unprimeable number.
Almost surely, 211662640 is an apocalyptic number.
11662640 is a gapful number since it is divisible by the number (10) 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 11662640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15333840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11662640 is a wasteful number, since it uses less digits than its factorization.
11662640 is an evil number, because the sum of its binary digits is even.
The square root of 11662640 is about 3415.0607608065. The cubic root of 11662640 is about 226.7769743760.
The spelling of 11662640 in words is "eleven million, six hundred sixty-two thousand, six hundred forty".