6467378664 has 32 divisors (see below), whose sum is σ = 16350120000. Its totient is φ = 2131569792.

The previous prime is 6467378657. The next prime is 6467378683. The reversal of 6467378664 is 4668737646.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511764 + ... + 1516035.

It is an arithmetic number, because the mean of its divisors is an integer number (510941250).

Almost surely, 2^6467378664 is an apocalyptic number.

It is an amenable number.

6467378664 is an abundant number, since it is smaller than the sum of its proper divisors (9882741336).

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

6467378664 is a wasteful number, since it uses less digits than its factorization.

6467378664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027897 (or 3027893 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 57.

The square root of 6467378664 is about 80420.0140760992. The cubic root of 6467378664 is about 1863.1283024976.

The spelling of 6467378664 in words is "six billion, four hundred sixty-seven million, three hundred seventy-eight thousand, six hundred sixty-four".