6666118 has 8 divisors (see below), whose sum is σ = 10231848. Its totient is φ = 3255504.

The previous prime is 6666097. The next prime is 6666133. The reversal of 6666118 is 8116666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×6666118³ (a number of 21 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 38671 + ... + 38842.

It is an arithmetic number, because the mean of its divisors is an integer number (1278981).

Almost surely, 2^6666118 is an apocalyptic number.

6666118 is a deficient number, since it is larger than the sum of its proper divisors (3565730).

6666118 is a wasteful number, since it uses less digits than its factorization.

6666118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77558.

The product of its digits is 10368, while the sum is 34.

The square root of 6666118 is about 2581.8826464423. The cubic root of 6666118 is about 188.2020424835.

The spelling of 6666118 in words is "six million, six hundred sixty-six thousand, one hundred eighteen".