6666827 has 4 divisors (see below), whose sum is σ = 6688176. Its totient is φ = 6645480.

The previous prime is 6666797. The next prime is 6666833. The reversal of 6666827 is 7286666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6666827 - 2¹⁰ = 6665803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6663827) 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, 10199 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (1672044).

Almost surely, 2^6666827 is an apocalyptic number.

6666827 is a deficient number, since it is larger than the sum of its proper divisors (21349).

6666827 is a wasteful number, since it uses less digits than its factorization.

6666827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21348.

The product of its digits is 145152, while the sum is 41.

The square root of 6666827 is about 2582.0199457014. The cubic root of 6666827 is about 188.2087145585.

The spelling of 6666827 in words is "six million, six hundred sixty-six thousand, eight hundred twenty-seven".