It is a tau number, because it is divible by the number of its divisors (192).
It is an Ulam number.
It is a congruent number.
Almost surely, 23655680 is an apocalyptic number.
3655680 is a gapful number since it is divisible by the number (30) 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 3655680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7076160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3655680 is a wasteful number, since it uses less digits than its factorization.
3655680 is an evil number, because the sum of its binary digits is even.
The square root of 3655680 is about 1911.9832635251. The cubic root of 3655680 is about 154.0479976323.
The spelling of 3655680 in words is "three million, six hundred fifty-five thousand, six hundred eighty".