6666146 has 8 divisors (see below), whose sum is σ = 10072620. Its totient is φ = 3308608.

The previous prime is 6666137. The next prime is 6666157. The reversal of 6666146 is 6416666.

It can be written as a sum of positive squares in 2 ways, for example, as 6375625 + 290521 = 2525^2 + 539^2 .

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

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, 11891 + ... + 12438.

Almost surely, 2^6666146 is an apocalyptic number.

6666146 is a deficient number, since it is larger than the sum of its proper divisors (3406474).

6666146 is a wasteful number, since it uses less digits than its factorization.

6666146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24468.

The product of its digits is 31104, while the sum is 35.

The square root of 6666146 is about 2581.8880688364. Note that the first 3 decimals coincide. The cubic root of 6666146 is about 188.2023059877.

The spelling of 6666146 in words is "six million, six hundred sixty-six thousand, one hundred forty-six".