6660980 has 12 divisors (see below), whose sum is σ = 13988100. Its totient is φ = 2664384.

The previous prime is 6660977. The next prime is 6661013. The reversal of 6660980 is 890666.

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 4778596 = 1372^2 + 2186^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6660980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166505 + ... + 166544.

It is an arithmetic number, because the mean of its divisors is an integer number (1165675).

Almost surely, 2^6660980 is an apocalyptic number.

It is an amenable number.

6660980 is an abundant number, since it is smaller than the sum of its proper divisors (7327120).

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

6660980 is a wasteful number, since it uses less digits than its factorization.

6660980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333058 (or 333056 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6660980 is about 2580.8874442718. The cubic root of 6660980 is about 188.1536769711.

The spelling of 6660980 in words is "six million, six hundred sixty thousand, nine hundred eighty".