6655556600 has 288 divisors, whose sum is σ = 19681552800. Its totient is φ = 2048640000.

The previous prime is 6655556599. The next prime is 6655556629. The reversal of 6655556600 is 66555566.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17109206 + ... + 17109594.

It is an arithmetic number, because the mean of its divisors is an integer number (68338725).

Almost surely, 2^6655556600 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 6655556600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9840776400).

6655556600 is an abundant number, since it is smaller than the sum of its proper divisors (13025996200).

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

6655556600 is a wasteful number, since it uses less digits than its factorization.

6655556600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The square root of 6655556600 is about 81581.5947380290. The cubic root of 6655556600 is about 1881.0259791449.

6655556600 divided by its reverse (66555566) gives a square (100 = 10²).

The spelling of 6655556600 in words is "six billion, six hundred fifty-five million, five hundred fifty-six thousand, six hundred".