6613664328 has 24 divisors (see below), whose sum is σ = 17912007750. Its totient is φ = 2204554752.

The previous prime is 6613664327. The next prime is 6613664353. The reversal of 6613664328 is 8234663166.

6613664328 is a `hidden beast` number, since 6 + 613 + 6 + 6 + 4 + 3 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5195238084 + 1418426244 = 72078^2 + 37662^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6613664327) 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 5 ways as a sum of consecutive naturals, for example, 45928153 + ... + 45928296.

Almost surely, 2^6613664328 is an apocalyptic number.

It is an amenable number.

6613664328 is an abundant number, since it is smaller than the sum of its proper divisors (11298343422).

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

6613664328 is a wasteful number, since it uses less digits than its factorization.

6613664328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91856461 (or 91856454 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 6613664328 is about 81324.4386885025. The cubic root of 6613664328 is about 1877.0710700212.

The spelling of 6613664328 in words is "six billion, six hundred thirteen million, six hundred sixty-four thousand, three hundred twenty-eight".