447646 has 4 divisors (see below), whose sum is σ = 671472. Its totient is φ = 223822.

The previous prime is 447641. The next prime is 447677. The reversal of 447646 is 646744.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111910 + ... + 111913.

It is an arithmetic number, because the mean of its divisors is an integer number (167868).

2⁴⁴⁷⁶⁴⁶ is an apocalyptic number.

447646 is a deficient number, since it is larger than the sum of its proper divisors (223826).

447646 is a wasteful number, since it uses less digits than its factorization.

447646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223825.

The product of its digits is 16128, while the sum is 31.

The square root of 447646 is about 669.0635246372. The cubic root of 447646 is about 76.4970879037.

The spelling of 447646 in words is "four hundred forty-seven thousand, six hundred forty-six".