4406643660 has 96 divisors (see below), whose sum is σ = 12778057152. Its totient is φ = 1133982720.

The previous prime is 4406643653. The next prime is 4406643691. The reversal of 4406643660 is 663466044.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182622 + ... + 205338.

It is an arithmetic number, because the mean of its divisors is an integer number (133104762).

Almost surely, 2^4406643660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4406643660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6389028576).

4406643660 is an abundant number, since it is smaller than the sum of its proper divisors (8371413492).

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

4406643660 is a wasteful number, since it uses less digits than its factorization.

4406643660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22843 (or 22841 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The square root of 4406643660 is about 66382.5553891984. Note that the first 3 decimals coincide. The cubic root of 4406643660 is about 1639.4668676556.

The spelling of 4406643660 in words is "four billion, four hundred six million, six hundred forty-three thousand, six hundred sixty".