6666536 has 16 divisors (see below), whose sum is σ = 12558240. Its totient is φ = 3317680.

The previous prime is 6666523. The next prime is 6666547. The reversal of 6666536 is 6356666.

It is a self number, because there is not a number n which added to its sum of digits gives 6666536.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (784890).

Almost surely, 2^6666536 is an apocalyptic number.

It is an amenable number.

6666536 is a deficient number, since it is larger than the sum of its proper divisors (5891704).

6666536 is a wasteful number, since it uses less digits than its factorization.

6666536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904 (or 3900 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 6666536 is about 2581.9635938564. The cubic root of 6666536 is about 188.2059761478.

The spelling of 6666536 in words is "six million, six hundred sixty-six thousand, five hundred thirty-six".