6531648 has 28 divisors (see below), whose sum is σ = 17282160. Its totient is φ = 2177152.

The previous prime is 6531643. The next prime is 6531653. The reversal of 6531648 is 8461356.

It is an interprime number because it is at equal distance from previous prime (6531643) and next prime (6531653).

It is not an unprimeable number, because it can be changed into a prime (6531643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16818 + ... + 17201.

It is an arithmetic number, because the mean of its divisors is an integer number (617220).

Almost surely, 2^6531648 is an apocalyptic number.

It is an amenable number.

6531648 is an abundant number, since it is smaller than the sum of its proper divisors (10750512).

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

6531648 is a wasteful number, since it uses less digits than its factorization.

6531648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34034 (or 34024 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 6531648 is about 2555.7089036117. The cubic root of 6531648 is about 186.9279560811.

It can be divided in two parts, 65 and 31648, that added together give a palindrome (31713).

The spelling of 6531648 in words is "six million, five hundred thirty-one thousand, six hundred forty-eight".