66164713 has 4 divisors (see below), whose sum is σ = 66181248. Its totient is φ = 66148180.

The previous prime is 66164701. The next prime is 66164717. The reversal of 66164713 is 31746166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66164713 - 2²¹ = 64067561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66164717) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1920 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (16545312).

Almost surely, 2^66164713 is an apocalyptic number.

It is an amenable number.

66164713 is a deficient number, since it is larger than the sum of its proper divisors (16535).

66164713 is an equidigital number, since it uses as much as digits as its factorization.

66164713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16534.

The product of its digits is 18144, while the sum is 34.

The square root of 66164713 is about 8134.1694720481. The cubic root of 66164713 is about 404.4599070091.

The spelling of 66164713 in words is "sixty-six million, one hundred sixty-four thousand, seven hundred thirteen".