6655551228 has 36 divisors (see below), whose sum is σ = 16909172280. Its totient is φ = 2207253216.

The previous prime is 6655551209. The next prime is 6655551233. The reversal of 6655551228 is 8221555566.

6655551228 is a `hidden beast` number, since 6 + 65 + 55 + 512 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 462138 + ... + 476321.

It is an arithmetic number, because the mean of its divisors is an integer number (469699230).

Almost surely, 2^6655551228 is an apocalyptic number.

It is an amenable number.

6655551228 is an abundant number, since it is smaller than the sum of its proper divisors (10253621052).

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

6655551228 is a wasteful number, since it uses less digits than its factorization.

6655551228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938666 (or 938661 counting only the distinct ones).

The product of its digits is 720000, while the sum is 45.

The square root of 6655551228 is about 81581.5618139295. The cubic root of 6655551228 is about 1881.0254730577.

The spelling of 6655551228 in words is "six billion, six hundred fifty-five million, five hundred fifty-one thousand, two hundred twenty-eight".