64613 has 2 divisors, whose sum is σ = 64614. Its totient is φ = 64612.

The previous prime is 64609. The next prime is 64621. The reversal of 64613 is 31646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49729 + 14884 = 223^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 64613 - 2² = 64609 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32306 + 32307.

It is an arithmetic number, because the mean of its divisors is an integer number (32307).

2⁶⁴⁶¹³ is an apocalyptic number.

It is an amenable number.

64613 is a deficient number, since it is larger than the sum of its proper divisors (1).

64613 is an equidigital number, since it uses as much as digits as its factorization.

64613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 64613 is about 254.1908731642. The cubic root of 64613 is about 40.1273027537.

The spelling of 64613 in words is "sixty-four thousand, six hundred thirteen".