68775229 has 2 divisors, whose sum is σ = 68775230. Its totient is φ = 68775228.

The previous prime is 68775227. The next prime is 68775247. The reversal of 68775229 is 92257786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 5890329 = 7930^2 + 2427^2 .

It is a cyclic number.

It is not a de Polignac number, because 68775229 - 2¹ = 68775227 is a prime.

Together with 68775227, 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 (68775227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34387614 + 34387615.

It is an arithmetic number, because the mean of its divisors is an integer number (34387615).

Almost surely, 2^68775229 is an apocalyptic number.

It is an amenable number.

68775229 is a deficient number, since it is larger than the sum of its proper divisors (1).

68775229 is an equidigital number, since it uses as much as digits as its factorization.

68775229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 68775229 is about 8293.0832022837. The cubic root of 68775229 is about 409.7107398539.

The spelling of 68775229 in words is "sixty-eight million, seven hundred seventy-five thousand, two hundred twenty-nine".