6664958208 has 72 divisors (see below), whose sum is σ = 19709474400. Its totient is φ = 2221650432.

The previous prime is 6664958207. The next prime is 6664958213. The reversal of 6664958208 is 8028594666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6664958207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475218 + ... + 489041.

It is an arithmetic number, because the mean of its divisors is an integer number (273742700).

Almost surely, 2^6664958208 is an apocalyptic number.

It is an amenable number.

6664958208 is an abundant number, since it is smaller than the sum of its proper divisors (13044516192).

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

6664958208 is an equidigital number, since it uses as much as digits as its factorization.

6664958208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964284 (or 964264 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The square root of 6664958208 is about 81639.1952924574. The cubic root of 6664958208 is about 1881.9112719106.

The spelling of 6664958208 in words is "six billion, six hundred sixty-four million, nine hundred fifty-eight thousand, two hundred eight".