66105545 has 8 divisors (see below), whose sum is σ = 86538240. Its totient is φ = 48076720.

The previous prime is 66105539. The next prime is 66105553. The reversal of 66105545 is 54550166.

66105545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 66105545 - 2¹⁴ = 66089161 is a prime.

It is an unprimeable number.

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, 600905 + ... + 601014.

It is an arithmetic number, because the mean of its divisors is an integer number (10817280).

Almost surely, 2^66105545 is an apocalyptic number.

It is an amenable number.

66105545 is a deficient number, since it is larger than the sum of its proper divisors (20432695).

66105545 is a wasteful number, since it uses less digits than its factorization.

66105545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201935.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 66105545 is about 8130.5316554331. The cubic root of 66105545 is about 404.3393078774.

The spelling of 66105545 in words is "sixty-six million, one hundred five thousand, five hundred forty-five".