66065713 has 8 divisors (see below), whose sum is σ = 76567680. Its totient is φ = 55829760.

The previous prime is 66065711. The next prime is 66065731. The reversal of 66065713 is 31756066.

It is a happy number.

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

It is not a de Polignac number, because 66065713 - 2¹ = 66065711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66065711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65968 + ... + 66961.

It is an arithmetic number, because the mean of its divisors is an integer number (9570960).

Almost surely, 2^66065713 is an apocalyptic number.

It is an amenable number.

66065713 is a deficient number, since it is larger than the sum of its proper divisors (10501967).

66065713 is a wasteful number, since it uses less digits than its factorization.

66065713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133007.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 66065713 is about 8128.0817540180. The cubic root of 66065713 is about 404.2580797988.

The spelling of 66065713 in words is "sixty-six million, sixty-five thousand, seven hundred thirteen".