6664847616 has 288 divisors, whose sum is σ = 22709657600. Its totient is φ = 1888634880.

The previous prime is 6664847587. The next prime is 6664847669. The reversal of 6664847616 is 6167484666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6724881 + ... + 6725871.

Almost surely, 2^6664847616 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 6664847616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11354828800).

6664847616 is an abundant number, since it is smaller than the sum of its proper divisors (16044809984).

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

6664847616 is a wasteful number, since it uses less digits than its factorization.

6664847616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1142 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 6664847616 is about 81638.5179679298. The cubic root of 6664847616 is about 1881.9008629689.

The spelling of 6664847616 in words is "six billion, six hundred sixty-four million, eight hundred forty-seven thousand, six hundred sixteen".