65611656 is nontrivially palindromic in base 10.
65611656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a self number, because there is not a number n which added to its sum of digits gives 65611656.
It is an unprimeable number.
Almost surely, 265611656 is an apocalyptic number.
65611656 is a gapful number since it is divisible by the number (66) 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 65611656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99590400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
65611656 is a wasteful number, since it uses less digits than its factorization.
65611656 is an odious number, because the sum of its binary digits is odd.
The square root of 65611656 is about 8100.1022215772. The cubic root of 65611656 is about 403.3298204886.
The spelling of 65611656 in words is "sixty-five million, six hundred eleven thousand, six hundred fifty-six".