664304317064 has 32 divisors (see below), whose sum is σ = 1293420744000. Its totient is φ = 319479220032.

The previous prime is 664304317043. The next prime is 664304317067. The reversal of 664304317064 is 460713403466.

It is not an unprimeable number, because it can be changed into a prime (664304317067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5382674 + ... + 5504705.

It is an arithmetic number, because the mean of its divisors is an integer number (40419398250).

Almost surely, 2^664304317064 is an apocalyptic number.

It is an amenable number.

664304317064 is a deficient number, since it is larger than the sum of its proper divisors (629116426936).

664304317064 is a wasteful number, since it uses less digits than its factorization.

664304317064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10887677 (or 10887673 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 664304317064 in words is "six hundred sixty-four billion, three hundred four million, three hundred seventeen thousand, sixty-four".