647448 has 32 divisors (see below), whose sum is σ = 1652400. Its totient is φ = 211328.

The previous prime is 647441. The next prime is 647453. The reversal of 647448 is 844746.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647448.

It is not an unprimeable number, because it can be changed into a prime (647441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018 + ... + 1526.

2⁶⁴⁷⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826200).

647448 is an abundant number, since it is smaller than the sum of its proper divisors (1004952).

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

647448 is a wasteful number, since it uses less digits than its factorization.

647448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 567 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 647448 is about 804.6415350950. The cubic root of 647448 is about 86.5103955787.

The spelling of 647448 in words is "six hundred forty-seven thousand, four hundred forty-eight".