6655445566 has 32 divisors (see below), whose sum is σ = 13178702592. Its totient is φ = 2440498560.

The previous prime is 6655445557. The next prime is 6655445591.

6655445566 is nontrivially palindromic in base 10.

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 15 ways as a sum of consecutive naturals, for example, 1268476 + ... + 1273711.

It is an arithmetic number, because the mean of its divisors is an integer number (411834456).

Almost surely, 2^6655445566 is an apocalyptic number.

6655445566 is a deficient number, since it is larger than the sum of its proper divisors (6523257026).

6655445566 is a wasteful number, since it uses less digits than its factorization.

6655445566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542224.

The product of its digits is 12960000, while the sum is 52.

The square root of 6655445566 is about 81580.9142263066. The cubic root of 6655445566 is about 1881.0155187625.

The spelling of 6655445566 in words is "six billion, six hundred fifty-five million, four hundred forty-five thousand, five hundred sixty-six".