6555647320 has 16 divisors (see below), whose sum is σ = 14750206560. Its totient is φ = 2622258912.

The previous prime is 6555647297. The next prime is 6555647323. The reversal of 6555647320 is 237465556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555647323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81945552 + ... + 81945631.

It is an arithmetic number, because the mean of its divisors is an integer number (921887910).

Almost surely, 2^6555647320 is an apocalyptic number.

It is an amenable number.

6555647320 is an abundant number, since it is smaller than the sum of its proper divisors (8194559240).

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

6555647320 is a wasteful number, since it uses less digits than its factorization.

6555647320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163891194 (or 163891190 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 43.

The square root of 6555647320 is about 80966.9520236497. The cubic root of 6555647320 is about 1871.5662019591.

The spelling of 6555647320 in words is "six billion, five hundred fifty-five million, six hundred forty-seven thousand, three hundred twenty".