6446004066 has 12 divisors (see below), whose sum is σ = 13966342182. Its totient is φ = 2148668016.

The previous prime is 6446004013. The next prime is 6446004073. The reversal of 6446004066 is 6604006446.

It is a happy number.

6446004066 is a `hidden beast` number, since 6 + 4 + 4 + 600 + 40 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4593992841 + 1852011225 = 67779^2 + 43035^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6446004066.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179055651 + ... + 179055686.

Almost surely, 2^6446004066 is an apocalyptic number.

6446004066 is an abundant number, since it is smaller than the sum of its proper divisors (7520338116).

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

6446004066 is a wasteful number, since it uses less digits than its factorization.

6446004066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358111345 (or 358111342 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6446004066 is about 80287.0105683354. The cubic root of 6446004066 is about 1861.0734992838.

The spelling of 6446004066 in words is "six billion, four hundred forty-six million, four thousand, sixty-six".