109106661 has 8 divisors (see below), whose sum is σ = 145729984. Its totient is φ = 72610560.

The previous prime is 109106659. The next prime is 109106681. The reversal of 109106661 is 166601901.

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 109106661 - 2¹ = 109106659 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109106681) 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, 29785 + ... + 33246.

It is an arithmetic number, because the mean of its divisors is an integer number (18216248).

Almost surely, 2^109106661 is an apocalyptic number.

It is an amenable number.

109106661 is a deficient number, since it is larger than the sum of its proper divisors (36623323).

109106661 is an equidigital number, since it uses as much as digits as its factorization.

109106661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63611.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 109106661 is about 10445.4133953616. The cubic root of 109106661 is about 477.8413790078.

It can be divided in two parts, 10910 and 6661, that added together give a palindrome (17571).

The spelling of 109106661 in words is "one hundred nine million, one hundred six thousand, six hundred sixty-one".