66143045 has 8 divisors (see below), whose sum is σ = 81307800. Its totient is φ = 51623680.

The previous prime is 66143041. The next prime is 66143059. The reversal of 66143045 is 54034166.

It is a happy number.

66143045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11175649 + 54967396 = 3343^2 + 7414^2 .

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

It is not a de Polignac number, because 66143045 - 2² = 66143041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66142999 and 66143017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66143041) 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 in 7 ways as a sum of consecutive naturals, for example, 161120 + ... + 161529.

It is an arithmetic number, because the mean of its divisors is an integer number (10163475).

Almost surely, 2^66143045 is an apocalyptic number.

It is an amenable number.

66143045 is a deficient number, since it is larger than the sum of its proper divisors (15164755).

66143045 is a wasteful number, since it uses less digits than its factorization.

66143045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322695.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 66143045 is about 8132.8374507302. The cubic root of 66143045 is about 404.4157505712.

The spelling of 66143045 in words is "sixty-six million, one hundred forty-three thousand, forty-five".