66065060 has 24 divisors (see below), whose sum is σ = 146898360. Its totient is φ = 24871424.

The previous prime is 66065029. The next prime is 66065081. The reversal of 66065060 is 6056066.

It can be written as a sum of positive squares in 4 ways, for example, as 23580736 + 42484324 = 4856^2 + 6518^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96815 + ... + 97494.

It is an arithmetic number, because the mean of its divisors is an integer number (6120765).

Almost surely, 2^66065060 is an apocalyptic number.

It is an amenable number.

66065060 is an abundant number, since it is smaller than the sum of its proper divisors (80833300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66065060 is a wasteful number, since it uses less digits than its factorization.

66065060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194335 (or 194333 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66065060 is about 8128.0415845393. The cubic root of 66065060 is about 404.2567478856.

The spelling of 66065060 in words is "sixty-six million, sixty-five thousand, sixty".