2064446666 has 8 divisors (see below), whose sum is σ = 3127330404. Its totient is φ = 1022003200.

The previous prime is 2064446651. The next prime is 2064446677. The reversal of 2064446666 is 6666444602.

It can be written as a sum of positive squares in 2 ways, for example, as 2046205225 + 18241441 = 45235^2 + 4271^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 5109815 + ... + 5110218.

Almost surely, 2^2064446666 is an apocalyptic number.

2064446666 is a deficient number, since it is larger than the sum of its proper divisors (1062883738).

2064446666 is a wasteful number, since it uses less digits than its factorization.

2064446666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10220136.

The product of its (nonzero) digits is 995328, while the sum is 44.

The square root of 2064446666 is about 45436.1823440306. The cubic root of 2064446666 is about 1273.3111903870.

The spelling of 2064446666 in words is "two billion, sixty-four million, four hundred forty-six thousand, six hundred sixty-six".