66144166 has 12 divisors (see below), whose sum is σ = 109056276. Its totient is φ = 30065420.

The previous prime is 66144163. The next prime is 66144167.

66144166 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66144163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136420 + ... + 136903.

It is an arithmetic number, because the mean of its divisors is an integer number (9088023).

Almost surely, 2^66144166 is an apocalyptic number.

66144166 is a deficient number, since it is larger than the sum of its proper divisors (42912110).

66144166 is a wasteful number, since it uses less digits than its factorization.

66144166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273347 (or 273336 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 66144166 is about 8132.9063685745. The cubic root of 66144166 is about 404.4180352534.

The spelling of 66144166 in words is "sixty-six million, one hundred forty-four thousand, one hundred sixty-six".