66236109 has 8 divisors (see below), whose sum is σ = 92963040. Its totient is φ = 41833296.

The previous prime is 66236101. The next prime is 66236111. The reversal of 66236109 is 90163266.

It is a happy number.

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

It is not a de Polignac number, because 66236109 - 2³ = 66236101 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 66236109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66236101) 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 7 ways as a sum of consecutive naturals, for example, 580962 + ... + 581075.

It is an arithmetic number, because the mean of its divisors is an integer number (11620380).

Almost surely, 2^66236109 is an apocalyptic number.

It is an amenable number.

66236109 is a deficient number, since it is larger than the sum of its proper divisors (26726931).

66236109 is a wasteful number, since it uses less digits than its factorization.

66236109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162059.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66236109 is about 8138.5569359684. The cubic root of 66236109 is about 404.6053341700.

The spelling of 66236109 in words is "sixty-six million, two hundred thirty-six thousand, one hundred nine".