66611105 has 24 divisors (see below), whose sum is σ = 91699776. Its totient is φ = 46328480.

The previous prime is 66611087. The next prime is 66611143. The reversal of 66611105 is 50111666.

It is not a de Polignac number, because 66611105 - 2¹⁰ = 66610081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11522 + ... + 16308.

It is an arithmetic number, because the mean of its divisors is an integer number (3820824).

Almost surely, 2^66611105 is an apocalyptic number.

It is an amenable number.

66611105 is a deficient number, since it is larger than the sum of its proper divisors (25088671).

66611105 is a wasteful number, since it uses less digits than its factorization.

66611105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837 (or 4826 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 66611105 is about 8161.5626567466. The cubic root of 66611105 is about 405.3674559698.

The spelling of 66611105 in words is "sixty-six million, six hundred eleven thousand, one hundred five".