6615606066 has 16 divisors (see below), whose sum is σ = 14009518944. Its totient is φ = 2075484224.

The previous prime is 6615606061. The next prime is 6615606073. The reversal of 6615606066 is 6606065166.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6615606061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32429340 + ... + 32429543.

It is an arithmetic number, because the mean of its divisors is an integer number (875594934).

Almost surely, 2^6615606066 is an apocalyptic number.

6615606066 is an abundant number, since it is smaller than the sum of its proper divisors (7393912878).

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

6615606066 is a wasteful number, since it uses less digits than its factorization.

6615606066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64858905.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 6615606066 is about 81336.3760318838. The cubic root of 6615606066 is about 1877.2547515330.

The spelling of 6615606066 in words is "six billion, six hundred fifteen million, six hundred six thousand, sixty-six".