6328404664 has 32 divisors (see below), whose sum is σ = 12134448000. Its totient is φ = 3093152992.

The previous prime is 6328404619. The next prime is 6328404673. The reversal of 6328404664 is 4664048236.

It is a super-3 number, since 3×6328404664³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6328404664.

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, 47037 + ... + 121939.

It is an arithmetic number, because the mean of its divisors is an integer number (379201500).

Almost surely, 2^6328404664 is an apocalyptic number.

It is an amenable number.

6328404664 is a deficient number, since it is larger than the sum of its proper divisors (5806043336).

6328404664 is a wasteful number, since it uses less digits than its factorization.

6328404664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75147 (or 75143 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 43.

The square root of 6328404664 is about 79551.2706623848. The cubic root of 6328404664 is about 1849.6863031779.

The spelling of 6328404664 in words is "six billion, three hundred twenty-eight million, four hundred four thousand, six hundred sixty-four".