447666 has 8 divisors (see below), whose sum is σ = 895344. Its totient is φ = 149220.

The previous prime is 447641. The next prime is 447677. The reversal of 447666 is 666744.

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

447666 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37300 + ... + 37311.

It is an arithmetic number, because the mean of its divisors is an integer number (111918).

2⁴⁴⁷⁶⁶⁶ is an apocalyptic number.

447666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447666 is a wasteful number, since it uses less digits than its factorization.

447666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74616.

The product of its digits is 24192, while the sum is 33.

The square root of 447666 is about 669.0784707342. The cubic root of 447666 is about 76.4982271365.

The spelling of 447666 in words is "four hundred forty-seven thousand, six hundred sixty-six".