68878223 has 2 divisors, whose sum is σ = 68878224. Its totient is φ = 68878222.

The previous prime is 68878177. The next prime is 68878231. The reversal of 68878223 is 32287886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68878223 - 2²⁰ = 67829647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68878273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34439111 + 34439112.

It is an arithmetic number, because the mean of its divisors is an integer number (34439112).

Almost surely, 2^68878223 is an apocalyptic number.

68878223 is a deficient number, since it is larger than the sum of its proper divisors (1).

68878223 is an equidigital number, since it uses as much as digits as its factorization.

68878223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The square root of 68878223 is about 8299.2905118450. The cubic root of 68878223 is about 409.9151579355.

The spelling of 68878223 in words is "sixty-eight million, eight hundred seventy-eight thousand, two hundred twenty-three".