4220645760 has 192 divisors, whose sum is σ = 15432094080. Its totient is φ = 1059274752.

The previous prime is 4220645749. The next prime is 4220645791. The reversal of 4220645760 is 675460224.

4220645760 is a `hidden beast` number, since 4 + 2 + 2 + 0 + 645 + 7 + 6 + 0 = 666.

4220645760 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 (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76369 + ... + 119471.

It is an arithmetic number, because the mean of its divisors is an integer number (80375490).

Almost surely, 2^4220645760 is an apocalyptic number.

4220645760 is a gapful number since it is divisible by the number (40) 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 4220645760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7716047040).

4220645760 is an abundant number, since it is smaller than the sum of its proper divisors (11211448320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4220645760 is a wasteful number, since it uses less digits than its factorization.

4220645760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43145 (or 43130 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 4220645760 is about 64966.4972120246. The cubic root of 4220645760 is about 1616.0680133450.

The spelling of 4220645760 in words is "four billion, two hundred twenty million, six hundred forty-five thousand, seven hundred sixty".