447668 has 12 divisors (see below), whose sum is σ = 843780. Its totient is φ = 206592.

The previous prime is 447641. The next prime is 447677. The reversal of 447668 is 866744.

It can be written as a sum of positive squares in 2 ways, for example, as 85264 + 362404 = 292^2 + 602^2 .

It is a congruent number.

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, 4253 + ... + 4356.

It is an arithmetic number, because the mean of its divisors is an integer number (70315).

2⁴⁴⁷⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

447668 is a deficient number, since it is larger than the sum of its proper divisors (396112).

447668 is a wasteful number, since it uses less digits than its factorization.

447668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8626 (or 8624 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 447668 is about 669.0799653255. The cubic root of 447668 is about 76.4983410579.

The spelling of 447668 in words is "four hundred forty-seven thousand, six hundred sixty-eight".