6555064320 has 480 divisors, whose sum is σ = 26875648800. Its totient is φ = 1496973312.

The previous prime is 6555064301. The next prime is 6555064343. The reversal of 6555064320 is 234605556.

It is a happy number.

6555064320 is a `hidden beast` number, since 6 + 5 + 5 + 5 + 0 + 643 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5805516 + ... + 5806644.

It is an arithmetic number, because the mean of its divisors is an integer number (55990935).

Almost surely, 2^6555064320 is an apocalyptic number.

6555064320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6555064320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13437824400).

6555064320 is an abundant number, since it is smaller than the sum of its proper divisors (20320584480).

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

6555064320 is a wasteful number, since it uses less digits than its factorization.

6555064320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 6555064320 is about 80963.3517092765. The cubic root of 6555064320 is about 1871.5107202556.

Adding to 6555064320 its reverse (234605556), we get a palindrome (6789669876).

The spelling of 6555064320 in words is "six billion, five hundred fifty-five million, sixty-four thousand, three hundred twenty".