66744105 has 24 divisors (see below), whose sum is σ = 109500096. Its totient is φ = 34715520.

The previous prime is 66744061. The next prime is 66744113. The reversal of 66744105 is 50144766.

It is not a de Polignac number, because 66744105 - 2⁸ = 66743849 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 23892 + ... + 26538.

It is an arithmetic number, because the mean of its divisors is an integer number (4562504).

Almost surely, 2^66744105 is an apocalyptic number.

It is an amenable number.

66744105 is a deficient number, since it is larger than the sum of its proper divisors (42755991).

66744105 is a wasteful number, since it uses less digits than its factorization.

66744105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737 (or 2696 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 66744105 is about 8169.7065430773. The cubic root of 66744105 is about 405.6370708174.

The spelling of 66744105 in words is "sixty-six million, seven hundred forty-four thousand, one hundred five".