6666660708 has 48 divisors (see below), whose sum is σ = 16188439680. Its totient is φ = 2132725504.

The previous prime is 6666660673. The next prime is 6666660713. The reversal of 6666660708 is 8070666666.

It is a happy number.

It is a super-2 number, since 2×6666660708² = 88888729991182122528, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 760 + ... + 115472.

It is an arithmetic number, because the mean of its divisors is an integer number (337259160).

Almost surely, 2^6666660708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666660708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8094219840).

6666660708 is an abundant number, since it is smaller than the sum of its proper divisors (9521778972).

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

6666660708 is a wasteful number, since it uses less digits than its factorization.

6666660708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114916 (or 114914 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 51.

The square root of 6666660708 is about 81649.6216035322. The cubic root of 6666660708 is about 1882.0714970299.

The spelling of 6666660708 in words is "six billion, six hundred sixty-six million, six hundred sixty thousand, seven hundred eight".