6605556480 has 252 divisors, whose sum is σ = 23726057040. Its totient is φ = 1761232896.

The previous prime is 6605556467. The next prime is 6605556491. The reversal of 6605556480 is 846555066.

It is a happy number.

6605556480 is a `hidden beast` number, since 6 + 6 + 0 + 5 + 5 + 564 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 929581 + ... + 936659.

It is an arithmetic number, because the mean of its divisors is an integer number (94151020).

Almost surely, 2^6605556480 is an apocalyptic number.

6605556480 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 6605556480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11863028520).

6605556480 is an abundant number, since it is smaller than the sum of its proper divisors (17120500560).

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

6605556480 is an frugal number, since it uses more digits than its factorization.

6605556480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7118 (or 7089 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The square root of 6605556480 is about 81274.5746220797. The cubic root of 6605556480 is about 1876.3037077079.

The spelling of 6605556480 in words is "six billion, six hundred five million, five hundred fifty-six thousand, four hundred eighty".