66000033 has 12 divisors (see below), whose sum is σ = 104000208. Its totient is φ = 39999960.

The previous prime is 66000029. The next prime is 66000043. The reversal of 66000033 is 33000066.

66000033 is a `hidden beast` number, since 660 + 0 + 0 + 0 + 3 + 3 = 666.

It is not a de Polignac number, because 66000033 - 2² = 66000029 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (66000013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333235 + ... + 333432.

It is an arithmetic number, because the mean of its divisors is an integer number (8666684).

Almost surely, 2^66000033 is an apocalyptic number.

It is an amenable number.

66000033 is a deficient number, since it is larger than the sum of its proper divisors (38000175).

66000033 is a wasteful number, since it uses less digits than its factorization.

66000033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666684 (or 666681 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 66000033 is about 8124.0404356453. The cubic root of 66000033 is about 404.1240694162.

Adding to 66000033 its reverse (33000066), we get a palindrome (99000099).

The spelling of 66000033 in words is "sixty-six million, thirty-three", and thus it is an aban number and an uban number.