68810369 has 2 divisors, whose sum is σ = 68810370. Its totient is φ = 68810368.

The previous prime is 68810353. The next prime is 68810393. The reversal of 68810369 is 96301886.

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., 41770369 + 27040000 = 6463^2 + 5200^2 .

It is a cyclic number.

It is not a de Polignac number, because 68810369 - 2⁴ = 68810353 is a prime.

It is a super-2 number, since 2×68810369² = 9469733763832322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (68810969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34405184 + 34405185.

It is an arithmetic number, because the mean of its divisors is an integer number (34405185).

Almost surely, 2^68810369 is an apocalyptic number.

It is an amenable number.

68810369 is a deficient number, since it is larger than the sum of its proper divisors (1).

68810369 is an equidigital number, since it uses as much as digits as its factorization.

68810369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68810369 is about 8295.2015647602. The cubic root of 68810369 is about 409.7805071440.

The spelling of 68810369 in words is "sixty-eight million, eight hundred ten thousand, three hundred sixty-nine".