66066075 has 36 divisors (see below), whose sum is σ = 118772160. Its totient is φ = 35104320.

The previous prime is 66066073. The next prime is 66066079. The reversal of 66066075 is 57066066.

It is not a de Polignac number, because 66066075 - 2¹ = 66066073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66066073) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 107469 + ... + 108081.

Almost surely, 2^66066075 is an apocalyptic number.

66066075 is a deficient number, since it is larger than the sum of its proper divisors (52706085).

66066075 is a wasteful number, since it uses less digits than its factorization.

66066075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 66066075 is about 8128.1040224643. The cubic root of 66066075 is about 404.2588181604.

Subtracting from 66066075 its reverse (57066066), we obtain a palindrome (9000009).

The spelling of 66066075 in words is "sixty-six million, sixty-six thousand, seventy-five".