6604739712 has 144 divisors (see below), whose sum is σ = 19218215250. Its totient is φ = 2177236992.

The previous prime is 6604739711. The next prime is 6604739737. The reversal of 6604739712 is 2179374066.

6604739712 is a `hidden beast` number, since 6 + 604 + 7 + 39 + 7 + 1 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1994872896 + 4609866816 = 44664^2 + 67896^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (6604739711) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14709664 + ... + 14710112.

Almost surely, 2^6604739712 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 6604739712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9609107625).

6604739712 is an abundant number, since it is smaller than the sum of its proper divisors (12613475538).

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

6604739712 is a wasteful number, since it uses less digits than its factorization.

6604739712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 6604739712 is about 81269.5497218977. The cubic root of 6604739712 is about 1876.2263703935.

The spelling of 6604739712 in words is "six billion, six hundred four million, seven hundred thirty-nine thousand, seven hundred twelve".