664808248752 has 40 divisors (see below), whose sum is σ = 1739160829440. Its totient is φ = 218797650240.

The previous prime is 664808248747. The next prime is 664808248757. The reversal of 664808248752 is 257842808466.

It is an interprime number because it is at equal distance from previous prime (664808248747) and next prime (664808248757).

It is a super-2 number, since 2×664808248752² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664808248757) 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, 87655524 + ... + 87663107.

It is an arithmetic number, because the mean of its divisors is an integer number (43479020736).

Almost surely, 2^664808248752 is an apocalyptic number.

It is an amenable number.

664808248752 is an abundant number, since it is smaller than the sum of its proper divisors (1074352580688).

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

664808248752 is a wasteful number, since it uses less digits than its factorization.

664808248752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175318721 (or 175318715 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 60.

The spelling of 664808248752 in words is "six hundred sixty-four billion, eight hundred eight million, two hundred forty-eight thousand, seven hundred fifty-two".