6618166 has 4 divisors (see below), whose sum is σ = 9927252. Its totient is φ = 3309082.

The previous prime is 6618127. The next prime is 6618169.

6618166 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6618169) 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 as a sum of consecutive naturals, namely, 1654540 + ... + 1654543.

It is an arithmetic number, because the mean of its divisors is an integer number (2481813).

Almost surely, 2^6618166 is an apocalyptic number.

6618166 is a deficient number, since it is larger than the sum of its proper divisors (3309086).

6618166 is a wasteful number, since it uses less digits than its factorization.

6618166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309085.

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

The square root of 6618166 is about 2572.5796391949. The cubic root of 6618166 is about 187.7496857270.

The spelling of 6618166 in words is "six million, six hundred eighteen thousand, one hundred sixty-six".