66484565 has 16 divisors (see below), whose sum is σ = 91344000. Its totient is φ = 45506880.

The previous prime is 66484549. The next prime is 66484573. The reversal of 66484565 is 56548466.

It is not a de Polignac number, because 66484565 - 2⁴ = 66484549 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22811 + ... + 25559.

It is an arithmetic number, because the mean of its divisors is an integer number (5709000).

Almost surely, 2^66484565 is an apocalyptic number.

It is an amenable number.

66484565 is a deficient number, since it is larger than the sum of its proper divisors (24859435).

66484565 is a wasteful number, since it uses less digits than its factorization.

66484565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452.

The product of its digits is 691200, while the sum is 44.

The square root of 66484565 is about 8153.8067796582. The cubic root of 66484565 is about 405.1106033337.

The spelling of 66484565 in words is "sixty-six million, four hundred eighty-four thousand, five hundred sixty-five".