6600666600 has 144 divisors (see below), whose sum is σ = 24182514720. Its totient is φ = 1600156800.

The previous prime is 6600666571. The next prime is 6600666623. The reversal of 6600666600 is 66660066.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a zygodrome in base 10.

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 35 ways as a sum of consecutive naturals, for example, 146884 + ... + 186483.

It is an arithmetic number, because the mean of its divisors is an integer number (167934130).

Almost surely, 2^6600666600 is an apocalyptic number.

6600666600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6600666600 is an abundant number, since it is smaller than the sum of its proper divisors (17581848120).

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

6600666600 is a wasteful number, since it uses less digits than its factorization.

6600666600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333400 (or 333388 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 6600666600 is about 81244.4865821675. The cubic root of 6600666600 is about 1875.8406044153.

It can be divided in two parts, 660066 and 6600, that added together give a palindrome (666666).

The spelling of 6600666600 in words is "six billion, six hundred million, six hundred sixty-six thousand, six hundred".