66143124 has 144 divisors (see below), whose sum is σ = 191213568. Its totient is φ = 19160064.

The previous prime is 66143117. The next prime is 66143177. The reversal of 66143124 is 42134166.

66143124 is nontrivially palindromic in base 11.

66143124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 520749 + ... + 520875.

It is an arithmetic number, because the mean of its divisors is an integer number (1327872).

Almost surely, 2^66143124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66143124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95606784).

66143124 is an abundant number, since it is smaller than the sum of its proper divisors (125070444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66143124 is a wasteful number, since it uses less digits than its factorization.

66143124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 209 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 66143124 is about 8132.8423075823. The cubic root of 66143124 is about 404.4159115800.

The spelling of 66143124 in words is "sixty-six million, one hundred forty-three thousand, one hundred twenty-four".