64679213 has 2 divisors, whose sum is σ = 64679214. Its totient is φ = 64679212.

The previous prime is 64679149. The next prime is 64679221. The reversal of 64679213 is 31297646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43270084 + 21409129 = 6578^2 + 4627^2 .

It is a cyclic number.

It is not a de Polignac number, because 64679213 - 2⁶ = 64679149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64679513) 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, 32339606 + 32339607.

It is an arithmetic number, because the mean of its divisors is an integer number (32339607).

Almost surely, 2^64679213 is an apocalyptic number.

It is an amenable number.

64679213 is a deficient number, since it is larger than the sum of its proper divisors (1).

64679213 is an equidigital number, since it uses as much as digits as its factorization.

64679213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 64679213 is about 8042.3387767490. The cubic root of 64679213 is about 401.4100506357.

The spelling of 64679213 in words is "sixty-four million, six hundred seventy-nine thousand, two hundred thirteen".