6663580 has 48 divisors (see below), whose sum is σ = 17450496. Its totient is φ = 2076480.

The previous prime is 6663557. The next prime is 6663593. The reversal of 6663580 is 853666.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (363552).

Almost surely, 2^6663580 is an apocalyptic number.

It is an amenable number.

6663580 is an abundant number, since it is smaller than the sum of its proper divisors (10786916).

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

6663580 is a wasteful number, since it uses less digits than its factorization.

6663580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354 (or 4352 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6663580 is about 2581.3910978385. The cubic root of 6663580 is about 188.1781546468.

The spelling of 6663580 in words is "six million, six hundred sixty-three thousand, five hundred eighty".