6311648 has 48 divisors (see below), whose sum is σ = 14958720. Its totient is φ = 2560896.

The previous prime is 6311639. The next prime is 6311659. The reversal of 6311648 is 8461136.

It is a self number, because there is not a number n which added to its sum of digits gives 6311648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (311640).

Almost surely, 2^6311648 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 6311648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7479360).

6311648 is an abundant number, since it is smaller than the sum of its proper divisors (8647072).

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

6311648 is a wasteful number, since it uses less digits than its factorization.

6311648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1511 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 6311648 is about 2512.2993452214. The cubic root of 6311648 is about 184.8052296391.

It can be divided in two parts, 63 and 11648, that added together give a palindrome (11711).

The spelling of 6311648 in words is "six million, three hundred eleven thousand, six hundred forty-eight".