64839263 has 2 divisors, whose sum is σ = 64839264. Its totient is φ = 64839262.

The previous prime is 64839217. The next prime is 64839293. The reversal of 64839263 is 36293846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64839263 - 2⁶ = 64839199 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64839263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64839293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32419631 + 32419632.

It is an arithmetic number, because the mean of its divisors is an integer number (32419632).

Almost surely, 2^64839263 is an apocalyptic number.

64839263 is a deficient number, since it is larger than the sum of its proper divisors (1).

64839263 is an equidigital number, since it uses as much as digits as its factorization.

64839263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The square root of 64839263 is about 8052.2830923906. The cubic root of 64839263 is about 401.7408769602.

The spelling of 64839263 in words is "sixty-four million, eight hundred thirty-nine thousand, two hundred sixty-three".