6660446 has 16 divisors (see below), whose sum is σ = 10859184. Its totient is φ = 3045504.

The previous prime is 6660427. The next prime is 6660473. The reversal of 6660446 is 6440666.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1805 + ... + 4071.

It is an arithmetic number, because the mean of its divisors is an integer number (678699).

Almost surely, 2^6660446 is an apocalyptic number.

6660446 is a deficient number, since it is larger than the sum of its proper divisors (4198738).

6660446 is a wasteful number, since it uses less digits than its factorization.

6660446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6660446 is about 2580.7839894110. The cubic root of 6660446 is about 188.1486488447.

The spelling of 6660446 in words is "six million, six hundred sixty thousand, four hundred forty-six".