66144036 has 24 divisors (see below), whose sum is σ = 176384320. Its totient is φ = 18898272.

The previous prime is 66144017. The next prime is 66144037. The reversal of 66144036 is 63044166.

66144036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66143994 and 66144012.

It is not an unprimeable number, because it can be changed into a prime (66144037) 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, 393631 + ... + 393798.

Almost surely, 2^66144036 is an apocalyptic number.

It is an amenable number.

66144036 is an abundant number, since it is smaller than the sum of its proper divisors (110240284).

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

66144036 is a wasteful number, since it uses less digits than its factorization.

66144036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787443 (or 787441 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 66144036 is about 8132.8983763478. The cubic root of 66144036 is about 404.4177703049.

The spelling of 66144036 in words is "sixty-six million, one hundred forty-four thousand, thirty-six".