6731648 has 64 divisors (see below), whose sum is σ = 16744320. Its totient is φ = 2618880.

The previous prime is 6731639. The next prime is 6731651. The reversal of 6731648 is 8461376.

It is a tau number, because it is divible by the number of its divisors (64).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9515 + ... + 10197.

It is an arithmetic number, because the mean of its divisors is an integer number (261630).

Almost surely, 2^6731648 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 6731648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8372160).

6731648 is an abundant number, since it is smaller than the sum of its proper divisors (10012672).

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

6731648 is a wasteful number, since it uses less digits than its factorization.

6731648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 703 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 6731648 is about 2594.5419634302. The cubic root of 6731648 is about 188.8167274272.

The spelling of 6731648 in words is "six million, seven hundred thirty-one thousand, six hundred forty-eight".