6660004404 has 24 divisors (see below), whose sum is σ = 15584042880. Its totient is φ = 2213711104.

The previous prime is 6660004363. The next prime is 6660004423. The reversal of 6660004404 is 4044000666.

It is a super-2 number, since 2×6660004404² = 88711317322598790432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781884 + ... + 790355.

It is an arithmetic number, because the mean of its divisors is an integer number (649335120).

Almost surely, 2^6660004404 is an apocalyptic number.

It is an amenable number.

6660004404 is an abundant number, since it is smaller than the sum of its proper divisors (8924038476).

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

6660004404 is a wasteful number, since it uses less digits than its factorization.

6660004404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572599 (or 1572597 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 6660004404 is about 81608.8500347848. The cubic root of 6660004404 is about 1881.4449058828. Note that the first 3 decimals are identical.

The spelling of 6660004404 in words is "six billion, six hundred sixty million, four thousand, four hundred four".