6666694 has 16 divisors (see below), whose sum is σ = 10432800. Its totient is φ = 3191104.

The previous prime is 6666689. The next prime is 6666719. The reversal of 6666694 is 4966666.

It is a self number, because there is not a number n which added to its sum of digits gives 6666694.

It is a congruent number.

It is an unprimeable number.

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, 7527 + ... + 8365.

It is an arithmetic number, because the mean of its divisors is an integer number (652050).

Almost surely, 2^6666694 is an apocalyptic number.

6666694 is a deficient number, since it is larger than the sum of its proper divisors (3766106).

6666694 is a wasteful number, since it uses less digits than its factorization.

6666694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

The product of its digits is 279936, while the sum is 43.

The square root of 6666694 is about 2581.9941905434. The cubic root of 6666694 is about 188.2074629924.

The spelling of 6666694 in words is "six million, six hundred sixty-six thousand, six hundred ninety-four".