6005506661 has 16 divisors (see below), whose sum is σ = 7491562368. Its totient is φ = 4677004800.

The previous prime is 6005506657. The next prime is 6005506699. The reversal of 6005506661 is 1666055006.

It is a cyclic number.

It is not a de Polignac number, because 6005506661 - 2² = 6005506657 is a prime.

It is a super-2 number, since 2×6005506661² = 72132220510630737842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6005506061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 123401 + ... + 165041.

It is an arithmetic number, because the mean of its divisors is an integer number (468222648).

Almost surely, 2^6005506661 is an apocalyptic number.

It is an amenable number.

6005506661 is a deficient number, since it is larger than the sum of its proper divisors (1486055707).

6005506661 is a wasteful number, since it uses less digits than its factorization.

6005506661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43532.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 6005506661 is about 77495.2041161258. The cubic root of 6005506661 is about 1817.6763265814.

The spelling of 6005506661 in words is "six billion, five million, five hundred six thousand, six hundred sixty-one".