6664332320 has 24 divisors (see below), whose sum is σ = 15744485484. Its totient is φ = 2665732864.

The previous prime is 6664332319. The next prime is 6664332391. The reversal of 6664332320 is 232334666.

It can be written as a sum of positive squares in 2 ways, for example, as 5357654416 + 1306677904 = 73196^2 + 36148^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20825879 + ... + 20826198.

Almost surely, 2^6664332320 is an apocalyptic number.

It is an amenable number.

6664332320 is an abundant number, since it is smaller than the sum of its proper divisors (9080153164).

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

6664332320 is a wasteful number, since it uses less digits than its factorization.

6664332320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41652092 (or 41652084 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 35.

The square root of 6664332320 is about 81635.3619456667. The cubic root of 6664332320 is about 1881.8523616860.

Adding to 6664332320 its reverse (232334666), we get a palindrome (6896666986).

The spelling of 6664332320 in words is "six billion, six hundred sixty-four million, three hundred thirty-two thousand, three hundred twenty".