6456648 has 64 divisors (see below), whose sum is σ = 18112320. Its totient is φ = 1900800.

The previous prime is 6456641. The next prime is 6456661. The reversal of 6456648 is 8466546.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6456641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9438 + ... + 10098.

It is an arithmetic number, because the mean of its divisors is an integer number (283005).

Almost surely, 2^6456648 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 6456648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9056160).

6456648 is an abundant number, since it is smaller than the sum of its proper divisors (11655672).

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

6456648 is a wasteful number, since it uses less digits than its factorization.

6456648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 714 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 6456648 is about 2540.9935064852. The cubic root of 6456648 is about 186.2097298940.

It can be divided in two parts, 6 and 456648, that added together give a palindrome (456654).

The spelling of 6456648 in words is "six million, four hundred fifty-six thousand, six hundred forty-eight".