64616213 has 2 divisors, whose sum is σ = 64616214. Its totient is φ = 64616212.

The previous prime is 64616179. The next prime is 64616219. The reversal of 64616213 is 31261646.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49885969 + 14730244 = 7063^2 + 3838^2 .

It is a cyclic number.

It is not a de Polignac number, because 64616213 - 2¹⁰ = 64615189 is a prime.

It is a super-2 number, since 2×64616213² = 8350509964922738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64616219) 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, 32308106 + 32308107.

It is an arithmetic number, because the mean of its divisors is an integer number (32308107).

Almost surely, 2^64616213 is an apocalyptic number.

It is an amenable number.

64616213 is a deficient number, since it is larger than the sum of its proper divisors (1).

64616213 is an equidigital number, since it uses as much as digits as its factorization.

64616213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 64616213 is about 8038.4210514255. The cubic root of 64616213 is about 401.2796787731.

Adding to 64616213 its reverse (31261646), we get a palindrome (95877859).

The spelling of 64616213 in words is "sixty-four million, six hundred sixteen thousand, two hundred thirteen".