6662112666 has 64 divisors (see below), whose sum is σ = 14899562496. Its totient is φ = 1968579200.

The previous prime is 6662112649. The next prime is 6662112727.

It is a happy number.

6662112666 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 867841 + ... + 875483.

It is an arithmetic number, because the mean of its divisors is an integer number (232805664).

Almost surely, 2^6662112666 is an apocalyptic number.

6662112666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6662112666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7449781248).

6662112666 is an abundant number, since it is smaller than the sum of its proper divisors (8237449830).

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

6662112666 is a wasteful number, since it uses less digits than its factorization.

6662112666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987.

The product of its digits is 186624, while the sum is 42.

The square root of 6662112666 is about 81621.7658838621. The cubic root of 6662112666 is about 1881.6434122744.

The spelling of 6662112666 in words is "six billion, six hundred sixty-two million, one hundred twelve thousand, six hundred sixty-six".