68289293 has 2 divisors, whose sum is σ = 68289294. Its totient is φ = 68289292.

The previous prime is 68289251. The next prime is 68289307. The reversal of 68289293 is 39298286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63329764 + 4959529 = 7958^2 + 2227^2 .

It is a cyclic number.

It is not a de Polignac number, because 68289293 - 2²⁰ = 67240717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68289223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34144646 + 34144647.

It is an arithmetic number, because the mean of its divisors is an integer number (34144647).

Almost surely, 2^68289293 is an apocalyptic number.

It is an amenable number.

68289293 is a deficient number, since it is larger than the sum of its proper divisors (1).

68289293 is an equidigital number, since it uses as much as digits as its factorization.

68289293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 68289293 is about 8263.7335992879. The cubic root of 68289293 is about 408.7435120094.

The spelling of 68289293 in words is "sixty-eight million, two hundred eighty-nine thousand, two hundred ninety-three".