Adding to 220147765 its reverse (567741022), we get a palindrome (787888787).
220147765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a cyclic number.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 220147765.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2220147765 is an apocalyptic number.
It is an amenable number.
220147765 is an equidigital number, since it uses as much as digits as its factorization.
220147765 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1988.
The square root of 220147765 is about 14837.3772951961. The cubic root of 220147765 is about 603.8161993919.
The spelling of 220147765 in words is "two hundred twenty million, one hundred forty-seven thousand, seven hundred sixty-five".