64713613 has 2 divisors, whose sum is σ = 64713614. Its totient is φ = 64713612.

The previous prime is 64713569. The next prime is 64713641. The reversal of 64713613 is 31631746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 11744329 = 7278^2 + 3427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64713613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64713643) 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 as a sum of consecutive naturals, namely, 32356806 + 32356807.

It is an arithmetic number, because the mean of its divisors is an integer number (32356807).

Almost surely, 2^64713613 is an apocalyptic number.

It is an amenable number.

64713613 is a deficient number, since it is larger than the sum of its proper divisors (1).

64713613 is an equidigital number, since it uses as much as digits as its factorization.

64713613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 64713613 is about 8044.4771738131. The cubic root of 64713613 is about 401.4812020808.

The spelling of 64713613 in words is "sixty-four million, seven hundred thirteen thousand, six hundred thirteen".