6644648160 has 192 divisors, whose sum is σ = 23695882560. Its totient is φ = 1738414080.

The previous prime is 6644648117. The next prime is 6644648167. The reversal of 6644648160 is 618464466.

6644648160 is a `hidden beast` number, since 6 + 6 + 446 + 48 + 160 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644648167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214450 + ... + 243470.

It is an arithmetic number, because the mean of its divisors is an integer number (123416055).

Almost surely, 2^6644648160 is an apocalyptic number.

6644648160 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 6644648160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11847941280).

6644648160 is an abundant number, since it is smaller than the sum of its proper divisors (17051234400).

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

6644648160 is a wasteful number, since it uses less digits than its factorization.

6644648160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29098 (or 29084 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 6644648160 is about 81514.7113102905. The cubic root of 6644648160 is about 1879.9977516195.

The spelling of 6644648160 in words is "six billion, six hundred forty-four million, six hundred forty-eight thousand, one hundred sixty".