66244166 has 8 divisors (see below), whose sum is σ = 101677224. Its totient is φ = 32351760.

The previous prime is 66244159. The next prime is 66244169. The reversal of 66244166 is 66144266.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66244169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385055 + ... + 385226.

It is an arithmetic number, because the mean of its divisors is an integer number (12709653).

Almost surely, 2^66244166 is an apocalyptic number.

66244166 is a deficient number, since it is larger than the sum of its proper divisors (35433058).

66244166 is a wasteful number, since it uses less digits than its factorization.

66244166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770326.

The product of its digits is 41472, while the sum is 35.

The square root of 66244166 is about 8139.0519103886. The cubic root of 66244166 is about 404.6217389833.

The spelling of 66244166 in words is "sixty-six million, two hundred forty-four thousand, one hundred sixty-six".