68519293 has 2 divisors, whose sum is σ = 68519294. Its totient is φ = 68519292.

The previous prime is 68519291. The next prime is 68519303. The reversal of 68519293 is 39291586.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57350329 + 11168964 = 7573^2 + 3342^2 .

It is a cyclic number.

It is not a de Polignac number, because 68519293 - 2¹ = 68519291 is a prime.

Together with 68519291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68519291) 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, 34259646 + 34259647.

It is an arithmetic number, because the mean of its divisors is an integer number (34259647).

Almost surely, 2^68519293 is an apocalyptic number.

It is an amenable number.

68519293 is a deficient number, since it is larger than the sum of its proper divisors (1).

68519293 is an equidigital number, since it uses as much as digits as its factorization.

68519293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 68519293 is about 8277.6381293217. The cubic root of 68519293 is about 409.2018838219.

The spelling of 68519293 in words is "sixty-eight million, five hundred nineteen thousand, two hundred ninety-three".