66325189 has 8 divisors (see below), whose sum is σ = 76266560. Its totient is φ = 56500416.

The previous prime is 66325187. The next prime is 66325199. The reversal of 66325189 is 98152366.

66325189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66325189 - 2¹ = 66325187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66325183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27924 + ... + 30205.

It is an arithmetic number, because the mean of its divisors is an integer number (9533320).

Almost surely, 2^66325189 is an apocalyptic number.

It is an amenable number.

66325189 is a deficient number, since it is larger than the sum of its proper divisors (9941371).

66325189 is a wasteful number, since it uses less digits than its factorization.

66325189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58299.

The product of its digits is 77760, while the sum is 40.

The square root of 66325189 is about 8144.0278118386. The cubic root of 66325189 is about 404.7866355689.

It can be divided in two parts, 663 and 25189, that added together give a palindrome (25852).

The spelling of 66325189 in words is "sixty-six million, three hundred twenty-five thousand, one hundred eighty-nine".