66795133 has 4 divisors (see below), whose sum is σ = 66816288. Its totient is φ = 66773980.

The previous prime is 66795119. The next prime is 66795137. The reversal of 66795133 is 33159766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33159766 = 2 ⋅16579883.

It is a cyclic number.

It is not a de Polignac number, because 66795133 - 2⁹ = 66794621 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66795137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (16704072).

Almost surely, 2^66795133 is an apocalyptic number.

It is an amenable number.

66795133 is a deficient number, since it is larger than the sum of its proper divisors (21155).

66795133 is a wasteful number, since it uses less digits than its factorization.

66795133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21154.

The product of its digits is 102060, while the sum is 40.

The square root of 66795133 is about 8172.8289471884. The cubic root of 66795133 is about 405.7404186497.

The spelling of 66795133 in words is "sixty-six million, seven hundred ninety-five thousand, one hundred thirty-three".