664304759936 has 64 divisors (see below), whose sum is σ = 1331650800000. Its totient is φ = 330092184576.

The previous prime is 664304759933. The next prime is 664304759959. The reversal of 664304759936 is 639957403466.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (664304759933) by changing a digit.

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, 15243650 + ... + 15287166.

It is an arithmetic number, because the mean of its divisors is an integer number (20807043750).

Almost surely, 2^664304759936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664304759936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665825400000).

664304759936 is an abundant number, since it is smaller than the sum of its proper divisors (667346040064).

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

664304759936 is a wasteful number, since it uses less digits than its factorization.

664304759936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44269 (or 44257 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 62.

The spelling of 664304759936 in words is "six hundred sixty-four billion, three hundred four million, seven hundred fifty-nine thousand, nine hundred thirty-six".