6644103066 has 24 divisors (see below), whose sum is σ = 14527630260. Its totient is φ = 2194382016.

The previous prime is 6644103007. The next prime is 6644103071. The reversal of 6644103066 is 6603014466.

6644103066 is a `hidden beast` number, since 6 + 644 + 1 + 0 + 3 + 0 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6637523841 + 6579225 = 81471^2 + 2565^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6644103066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1691235 + ... + 1695158.

Almost surely, 2^6644103066 is an apocalyptic number.

6644103066 is an abundant number, since it is smaller than the sum of its proper divisors (7883527194).

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

6644103066 is a wasteful number, since it uses less digits than its factorization.

6644103066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386510 (or 3386507 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 6644103066 is about 81511.3677102771. The cubic root of 6644103066 is about 1879.9463416479.

The spelling of 6644103066 in words is "six billion, six hundred forty-four million, one hundred three thousand, sixty-six".