447645 has 16 divisors (see below), whose sum is σ = 781632. Its totient is φ = 216960.

The previous prime is 447641. The next prime is 447677. The reversal of 447645 is 546744.

It is not a de Polignac number, because 447645 - 2² = 447641 is a prime.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 1192 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (48852).

2⁴⁴⁷⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

447645 is a deficient number, since it is larger than the sum of its proper divisors (333987).

447645 is a wasteful number, since it uses less digits than its factorization.

447645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732.

The product of its digits is 13440, while the sum is 30.

The square root of 447645 is about 669.0627773236. The cubic root of 447645 is about 76.4970309412.

Subtracting 447645 from its reverse (546744), we obtain a palindrome (99099).

The spelling of 447645 in words is "four hundred forty-seven thousand, six hundred forty-five".