6604372720 has 160 divisors (see below), whose sum is σ = 17953850880. Its totient is φ = 2234833920.

The previous prime is 6604372703. The next prime is 6604372727. The reversal of 6604372720 is 272734066.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 6604372720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6604372727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 744471 + ... + 753289.

It is an arithmetic number, because the mean of its divisors is an integer number (112211568).

Almost surely, 2^6604372720 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 6604372720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8976925440).

6604372720 is an abundant number, since it is smaller than the sum of its proper divisors (11349478160).

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

6604372720 is a wasteful number, since it uses less digits than its factorization.

6604372720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903 (or 8897 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 6604372720 is about 81267.2918214948. The cubic root of 6604372720 is about 1876.1916189447.

The spelling of 6604372720 in words is "six billion, six hundred four million, three hundred seventy-two thousand, seven hundred twenty".