6664444 has 6 divisors (see below), whose sum is σ = 11662784. Its totient is φ = 3332220.

The previous prime is 6664429. The next prime is 6664447. The reversal of 6664444 is 4444666.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833052 + ... + 833059.

Almost surely, 2^6664444 is an apocalyptic number.

It is an amenable number.

6664444 is a deficient number, since it is larger than the sum of its proper divisors (4998340).

6664444 is a wasteful number, since it uses less digits than its factorization.

6664444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666115 (or 1666113 counting only the distinct ones).

The product of its digits is 55296, while the sum is 34.

The square root of 6664444 is about 2581.5584440411. The cubic root of 6664444 is about 188.1862873572.

The spelling of 6664444 in words is "six million, six hundred sixty-four thousand, four hundred forty-four".