6642580 has 48 divisors (see below), whose sum is σ = 16886016. Its totient is φ = 2142720.

The previous prime is 6642553. The next prime is 6642593. The reversal of 6642580 is 852466.

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, 985 + ... + 3775.

It is an arithmetic number, because the mean of its divisors is an integer number (351792).

Almost surely, 2^6642580 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 6642580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8443008).

6642580 is an abundant number, since it is smaller than the sum of its proper divisors (10243436).

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

6642580 is a wasteful number, since it uses less digits than its factorization.

6642580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6642580 is about 2577.3203138143. The cubic root of 6642580 is about 187.9802680362.

The spelling of 6642580 in words is "six million, six hundred forty-two thousand, five hundred eighty".