68287313 has 2 divisors, whose sum is σ = 68287314. Its totient is φ = 68287312.

The previous prime is 68287279. The next prime is 68287333. The reversal of 68287313 is 31378286.

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., 54656449 + 13630864 = 7393^2 + 3692^2 .

It is a cyclic number.

It is not a de Polignac number, because 68287313 - 2¹⁰ = 68286289 is a prime.

It is not a weakly prime, because it can be changed into another prime (68287333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34143656 + 34143657.

It is an arithmetic number, because the mean of its divisors is an integer number (34143657).

Almost surely, 2^68287313 is an apocalyptic number.

It is an amenable number.

68287313 is a deficient number, since it is larger than the sum of its proper divisors (1).

68287313 is an equidigital number, since it uses as much as digits as its factorization.

68287313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 68287313 is about 8263.6137978490. The cubic root of 68287313 is about 408.7395615611.

It can be divided in two parts, 6828 and 7313, that added together give a palindrome (14141).

The spelling of 68287313 in words is "sixty-eight million, two hundred eighty-seven thousand, three hundred thirteen".