66133065 has 16 divisors (see below), whose sum is σ = 105929856. Its totient is φ = 35232000.

The previous prime is 66133063. The next prime is 66133099. The reversal of 66133065 is 56033166.

66133065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66133065 - 2¹ = 66133063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66133063) 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 15 ways as a sum of consecutive naturals, for example, 16180 + ... + 19850.

It is an arithmetic number, because the mean of its divisors is an integer number (6620616).

Almost surely, 2^66133065 is an apocalyptic number.

It is an amenable number.

66133065 is a deficient number, since it is larger than the sum of its proper divisors (39796791).

66133065 is a wasteful number, since it uses less digits than its factorization.

66133065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 66133065 is about 8132.2238655856. The cubic root of 66133065 is about 404.3954094444.

The spelling of 66133065 in words is "sixty-six million, one hundred thirty-three thousand, sixty-five".