66304713 has 4 divisors (see below), whose sum is σ = 88406288. Its totient is φ = 44203140.

The previous prime is 66304697. The next prime is 66304717. The reversal of 66304713 is 31740366.

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.

It is not a de Polignac number, because 66304713 - 2⁴ = 66304697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66304717) 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, 11050783 + ... + 11050788.

It is an arithmetic number, because the mean of its divisors is an integer number (22101572).

Almost surely, 2^66304713 is an apocalyptic number.

It is an amenable number.

66304713 is a deficient number, since it is larger than the sum of its proper divisors (22101575).

66304713 is a wasteful number, since it uses less digits than its factorization.

66304713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22101574.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 66304713 is about 8142.7705972844. The cubic root of 66304713 is about 404.7449758599.

The spelling of 66304713 in words is "sixty-six million, three hundred four thousand, seven hundred thirteen".