6640848 has 60 divisors (see below), whose sum is σ = 18802368. Its totient is φ = 2187840.

The previous prime is 6640841. The next prime is 6640849. The reversal of 6640848 is 8480466.

6640848 is a `hidden beast` number, since 6 + 640 + 8 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15193 + ... + 15623.

Almost surely, 2^6640848 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 6640848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9401184).

6640848 is an abundant number, since it is smaller than the sum of its proper divisors (12161520).

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

6640848 is a wasteful number, since it uses less digits than its factorization.

6640848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 6640848 is about 2576.9842840033. The cubic root of 6640848 is about 187.9639284951.

The spelling of 6640848 in words is "six million, six hundred forty thousand, eight hundred forty-eight".