66745166 has 8 divisors (see below), whose sum is σ = 101814840. Its totient is φ = 32806888.

The previous prime is 66745117. The next prime is 66745187. The reversal of 66745166 is 66154766.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282701 + ... + 282936.

It is an arithmetic number, because the mean of its divisors is an integer number (12726855).

Almost surely, 2^66745166 is an apocalyptic number.

66745166 is a deficient number, since it is larger than the sum of its proper divisors (35069674).

66745166 is a wasteful number, since it uses less digits than its factorization.

66745166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565698.

The product of its digits is 181440, while the sum is 41.

The square root of 66745166 is about 8169.7714778322. The cubic root of 66745166 is about 405.6392202140.

The spelling of 66745166 in words is "sixty-six million, seven hundred forty-five thousand, one hundred sixty-six".