66140133 has 4 divisors (see below), whose sum is σ = 88186848. Its totient is φ = 44093420.

The previous prime is 66140119. The next prime is 66140141. The reversal of 66140133 is 33104166.

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.

It is a cyclic number.

It is not a de Polignac number, because 66140133 - 2⁵ = 66140101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66140033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11023353 + ... + 11023358.

It is an arithmetic number, because the mean of its divisors is an integer number (22046712).

Almost surely, 2^66140133 is an apocalyptic number.

It is an amenable number.

66140133 is a deficient number, since it is larger than the sum of its proper divisors (22046715).

66140133 is a wasteful number, since it uses less digits than its factorization.

66140133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22046714.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 66140133 is about 8132.6584214511. The cubic root of 66140133 is about 404.4098155761.

Adding to 66140133 its reverse (33104166), we get a palindrome (99244299).

The spelling of 66140133 in words is "sixty-six million, one hundred forty thousand, one hundred thirty-three".