6642360560 has 80 divisors (see below), whose sum is σ = 16871777280. Its totient is φ = 2411915520.

The previous prime is 6642360497. The next prime is 6642360589. The reversal of 6642360560 is 650632466.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648761 + ... + 658919.

It is an arithmetic number, because the mean of its divisors is an integer number (210897216).

Almost surely, 2^6642360560 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 6642360560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8435888640).

6642360560 is an abundant number, since it is smaller than the sum of its proper divisors (10229416720).

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

6642360560 is a wasteful number, since it uses less digits than its factorization.

6642360560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10926 (or 10920 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 6642360560 is about 81500.6782793861. The cubic root of 6642360560 is about 1879.7819801500.

The spelling of 6642360560 in words is "six billion, six hundred forty-two million, three hundred sixty thousand, five hundred sixty".