64613713 has 2 divisors, whose sum is σ = 64613714. Its totient is φ = 64613712.

The previous prime is 64613707. The next prime is 64613723. The reversal of 64613713 is 31731646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63473089 + 1140624 = 7967^2 + 1068^2 .

It is a cyclic number.

It is not a de Polignac number, because 64613713 - 2¹⁷ = 64482641 is a prime.

It is not a weakly prime, because it can be changed into another prime (64613723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32306856 + 32306857.

It is an arithmetic number, because the mean of its divisors is an integer number (32306857).

Almost surely, 2^64613713 is an apocalyptic number.

It is an amenable number.

64613713 is a deficient number, since it is larger than the sum of its proper divisors (1).

64613713 is an equidigital number, since it uses as much as digits as its factorization.

64613713 is an evil number, because the sum of its binary digits is even.

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

The square root of 64613713 is about 8038.2655467458. The cubic root of 64613713 is about 401.2745035388.

The spelling of 64613713 in words is "sixty-four million, six hundred thirteen thousand, seven hundred thirteen".