6644980 has 24 divisors (see below), whose sum is σ = 14126112. Its totient is φ = 2625312.

The previous prime is 6644969. The next prime is 6644983. The reversal of 6644980 is 894466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342 + ... + 3661.

It is an arithmetic number, because the mean of its divisors is an integer number (588588).

Almost surely, 2^6644980 is an apocalyptic number.

It is an amenable number.

6644980 is an abundant number, since it is smaller than the sum of its proper divisors (7481132).

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

6644980 is a wasteful number, since it uses less digits than its factorization.

6644980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095 (or 4093 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 6644980 is about 2577.7858716348. The cubic root of 6644980 is about 188.0029047386.

The spelling of 6644980 in words is "six million, six hundred forty-four thousand, nine hundred eighty".