6679666 has 16 divisors (see below), whose sum is σ = 11523456. Its totient is φ = 2844576.

The previous prime is 6679661. The next prime is 6679667. The reversal of 6679666 is 6669766.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6679661) 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 7 ways as a sum of consecutive naturals, for example, 910 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (720216).

Almost surely, 2^6679666 is an apocalyptic number.

6679666 is a deficient number, since it is larger than the sum of its proper divisors (4843790).

6679666 is a wasteful number, since it uses less digits than its factorization.

6679666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033.

The product of its digits is 489888, while the sum is 46.

The square root of 6679666 is about 2584.5049816164. The cubic root of 6679666 is about 188.3294547630.

The spelling of 6679666 in words is "six million, six hundred seventy-nine thousand, six hundred sixty-six".