6659812 has 12 divisors (see below), whose sum is σ = 11684736. Its totient is φ = 3321320.

The previous prime is 6659803. The next prime is 6659813. The reversal of 6659812 is 2189566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659813) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 208 + ... + 3655.

It is an arithmetic number, because the mean of its divisors is an integer number (973728).

Almost surely, 2^6659812 is an apocalyptic number.

It is an amenable number.

6659812 is a deficient number, since it is larger than the sum of its proper divisors (5024924).

6659812 is a wasteful number, since it uses less digits than its factorization.

6659812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298 (or 4296 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 6659812 is about 2580.6611555956. The cubic root of 6659812 is about 188.1426787726.

The spelling of 6659812 in words is "six million, six hundred fifty-nine thousand, eight hundred twelve".