6648891060 has 192 divisors, whose sum is σ = 22535073792. Its totient is φ = 1431834624.

The previous prime is 6648891017. The next prime is 6648891061. The reversal of 6648891060 is 601988466.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648891061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 642084 + ... + 652356.

It is an arithmetic number, because the mean of its divisors is an integer number (117370176).

Almost surely, 2^6648891060 is an apocalyptic number.

6648891060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6648891060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11267536896).

6648891060 is an abundant number, since it is smaller than the sum of its proper divisors (15886182732).

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

6648891060 is a wasteful number, since it uses less digits than its factorization.

6648891060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10382 (or 10380 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 6648891060 is about 81540.7325206243. The cubic root of 6648891060 is about 1880.3978202189.

The spelling of 6648891060 in words is "six billion, six hundred forty-eight million, eight hundred ninety-one thousand, sixty".