66135146 has 16 divisors (see below), whose sum is σ = 123681600. Its totient is φ = 25766880.

The previous prime is 66135137. The next prime is 66135193. The reversal of 66135146 is 64153166.

66135146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 214571 + ... + 214878.

It is an arithmetic number, because the mean of its divisors is an integer number (7730100).

Almost surely, 2^66135146 is an apocalyptic number.

66135146 is a deficient number, since it is larger than the sum of its proper divisors (57546454).

66135146 is a wasteful number, since it uses less digits than its factorization.

66135146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429469.

The product of its digits is 12960, while the sum is 32.

The square root of 66135146 is about 8132.3518123603. The cubic root of 66135146 is about 404.3996510847.

The spelling of 66135146 in words is "sixty-six million, one hundred thirty-five thousand, one hundred forty-six".