64715713 has 4 divisors (see below), whose sum is σ = 64762308. Its totient is φ = 64669120.

The previous prime is 64715711. The next prime is 64715723. The reversal of 64715713 is 31751746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50936769 + 13778944 = 7137^2 + 3712^2 .

It is a cyclic number.

It is not a de Polignac number, because 64715713 - 2¹ = 64715711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64715711) 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, 21148 + ... + 24013.

It is an arithmetic number, because the mean of its divisors is an integer number (16190577).

Almost surely, 2^64715713 is an apocalyptic number.

It is an amenable number.

64715713 is a deficient number, since it is larger than the sum of its proper divisors (46595).

64715713 is a wasteful number, since it uses less digits than its factorization.

64715713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46594.

The product of its digits is 17640, while the sum is 34.

The square root of 64715713 is about 8044.6076970850. The cubic root of 64715713 is about 401.4855448116.

The spelling of 64715713 in words is "sixty-four million, seven hundred fifteen thousand, seven hundred thirteen".