4446644666 has 8 divisors (see below), whose sum is σ = 6688142400. Its totient is φ = 2217263868.

The previous prime is 4446644659. The next prime is 4446644669. The reversal of 4446644666 is 6664466444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (4446644669) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3028316 + ... + 3029783.

It is an arithmetic number, because the mean of its divisors is an integer number (836017800).

Almost surely, 2^4446644666 is an apocalyptic number.

4446644666 is a deficient number, since it is larger than the sum of its proper divisors (2241497734).

4446644666 is a wasteful number, since it uses less digits than its factorization.

4446644666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058468.

The product of its digits is 7962624, while the sum is 50.

The square root of 4446644666 is about 66683.1662865524. The cubic root of 4446644666 is about 1644.4126487768.

The spelling of 4446644666 in words is "four billion, four hundred forty-six million, six hundred forty-four thousand, six hundred sixty-six".