66185065 has 8 divisors (see below), whose sum is σ = 79470720. Its totient is φ = 52915632.

The previous prime is 66185057. The next prime is 66185089. The reversal of 66185065 is 56058166.

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

It is a cyclic number.

It is not a de Polignac number, because 66185065 - 2³ = 66185057 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 7 ways as a sum of consecutive naturals, for example, 8416 + ... + 14254.

It is an arithmetic number, because the mean of its divisors is an integer number (9933840).

Almost surely, 2^66185065 is an apocalyptic number.

It is an amenable number.

66185065 is a deficient number, since it is larger than the sum of its proper divisors (13285655).

66185065 is a wasteful number, since it uses less digits than its factorization.

66185065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8111.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 66185065 is about 8135.4203947921. The cubic root of 66185065 is about 404.5013728389.

The spelling of 66185065 in words is "sixty-six million, one hundred eighty-five thousand, sixty-five".