66170109 has 8 divisors (see below), whose sum is σ = 88350112. Its totient is φ = 44051760.

The previous prime is 66170107. The next prime is 66170113. The reversal of 66170109 is 90107166.

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

It is not a de Polignac number, because 66170109 - 2¹ = 66170107 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 (66170101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12847 + ... + 17244.

It is an arithmetic number, because the mean of its divisors is an integer number (11043764).

Almost surely, 2^66170109 is an apocalyptic number.

It is an amenable number.

66170109 is a deficient number, since it is larger than the sum of its proper divisors (22180003).

66170109 is a wasteful number, since it uses less digits than its factorization.

66170109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30827.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 66170109 is about 8134.5011524985. The cubic root of 66170109 is about 404.4709018241.

The spelling of 66170109 in words is "sixty-six million, one hundred seventy thousand, one hundred nine".