6668536 has 32 divisors (see below), whose sum is σ = 14387040. Its totient is φ = 2838528.

The previous prime is 6668531. The next prime is 6668537. The reversal of 6668536 is 6358666.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10500 + ... + 11116.

It is an arithmetic number, because the mean of its divisors is an integer number (449595).

Almost surely, 2^6668536 is an apocalyptic number.

It is an amenable number.

6668536 is an abundant number, since it is smaller than the sum of its proper divisors (7718504).

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

6668536 is a wasteful number, since it uses less digits than its factorization.

6668536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 819 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 6668536 is about 2582.3508669428. The cubic root of 6668536 is about 188.2247952324.

The spelling of 6668536 in words is "six million, six hundred sixty-eight thousand, five hundred thirty-six".