66133064 has 8 divisors (see below), whose sum is σ = 123999510. Its totient is φ = 33066528.

The previous prime is 66133063. The next prime is 66133099. The reversal of 66133064 is 46033166.

It can be written as a sum of positive squares in only one way, i.e., 37724164 + 28408900 = 6142^2 + 5330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (66133063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4133309 + ... + 4133324.

Almost surely, 2^66133064 is an apocalyptic number.

It is an amenable number.

66133064 is a deficient number, since it is larger than the sum of its proper divisors (57866446).

66133064 is a wasteful number, since it uses less digits than its factorization.

66133064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8266639 (or 8266635 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 66133064 is about 8132.2238041018. The cubic root of 66133064 is about 404.3954074061.

The spelling of 66133064 in words is "sixty-six million, one hundred thirty-three thousand, sixty-four".