5556066665 has 8 divisors (see below), whose sum is σ = 6670053000. Its totient is φ = 4443004672.

The previous prime is 5556066629. The next prime is 5556066673. The reversal of 5556066665 is 5666606555.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2509909801 + 3046156864 = 50099^2 + 55192^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5556066665 - 2²⁰ = 5555018089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217790 + ... + 241959.

It is an arithmetic number, because the mean of its divisors is an integer number (833756625).

Almost surely, 2^5556066665 is an apocalyptic number.

It is an amenable number.

5556066665 is a deficient number, since it is larger than the sum of its proper divisors (1113986335).

5556066665 is a wasteful number, since it uses less digits than its factorization.

5556066665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462171.

The product of its (nonzero) digits is 4860000, while the sum is 50.

The square root of 5556066665 is about 74539.0277975236. The cubic root of 5556066665 is about 1771.1519271219.

The spelling of 5556066665 in words is "five billion, five hundred fifty-six million, sixty-six thousand, six hundred sixty-five".