64616273 has 2 divisors, whose sum is σ = 64616274. Its totient is φ = 64616272.

The previous prime is 64616267. The next prime is 64616291. The reversal of 64616273 is 37261646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44249104 + 20367169 = 6652^2 + 4513^2 .

It is a cyclic number.

It is not a de Polignac number, because 64616273 - 2¹⁶ = 64550737 is a prime.

It is not a weakly prime, because it can be changed into another prime (64616213) 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, 32308136 + 32308137.

It is an arithmetic number, because the mean of its divisors is an integer number (32308137).

Almost surely, 2^64616273 is an apocalyptic number.

It is an amenable number.

64616273 is a deficient number, since it is larger than the sum of its proper divisors (1).

64616273 is an equidigital number, since it uses as much as digits as its factorization.

64616273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 64616273 is about 8038.4247835008. The cubic root of 64616273 is about 401.2798029771.

The spelling of 64616273 in words is "sixty-four million, six hundred sixteen thousand, two hundred seventy-three".