6404006006 has 16 divisors (see below), whose sum is σ = 9789840144. Its totient is φ = 3140757984.

The previous prime is 6404006003. The next prime is 6404006027. The reversal of 6404006006 is 6006004046.

It is a super-2 number, since 2×6404006006² = 82022585849768144072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404006003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649445 + ... + 659231.

It is an arithmetic number, because the mean of its divisors is an integer number (611865009).

Almost surely, 2^6404006006 is an apocalyptic number.

6404006006 is a deficient number, since it is larger than the sum of its proper divisors (3385834138).

6404006006 is a wasteful number, since it uses less digits than its factorization.

6404006006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16015.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 6404006006 is about 80025.0336207365. The cubic root of 6404006006 is about 1857.0228324962.

The spelling of 6404006006 in words is "six billion, four hundred four million, six thousand, six".