6666444466 has 16 divisors (see below), whose sum is σ = 10912197888. Its totient is φ = 3029238000.

The previous prime is 6666444439. The next prime is 6666444493. The reversal of 6666444466 is 6644446666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6666444439) and next prime (6666444493).

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24991 + ... + 118141.

It is an arithmetic number, because the mean of its divisors is an integer number (682012368).

It is a self-describing number.

Almost surely, 2^6666444466 is an apocalyptic number.

6666444466 is a deficient number, since it is larger than the sum of its proper divisors (4245753422).

6666444466 is a wasteful number, since it uses less digits than its factorization.

6666444466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96417.

The product of its digits is 11943936, while the sum is 52.

The square root of 6666444466 is about 81648.2973857998. The cubic root of 6666444466 is about 1882.0511476464.

The spelling of 6666444466 in words is "six billion, six hundred sixty-six million, four hundred forty-four thousand, four hundred sixty-six".