6642560 has 64 divisors (see below), whose sum is σ = 16193520. Its totient is φ = 2605056.

The previous prime is 6642553. The next prime is 6642593. The reversal of 6642560 is 652466.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62027 + ... + 62133.

Almost surely, 2^6642560 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 6642560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8096760).

6642560 is an abundant number, since it is smaller than the sum of its proper divisors (9550960).

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

6642560 is a wasteful number, since it uses less digits than its factorization.

6642560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 6642560 is about 2577.3164338125. The cubic root of 6642560 is about 187.9800793741.

The spelling of 6642560 in words is "six million, six hundred forty-two thousand, five hundred sixty".