68098391 has 2 divisors, whose sum is σ = 68098392. Its totient is φ = 68098390.

The previous prime is 68098367. The next prime is 68098399. The reversal of 68098391 is 19389086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68098391 - 2¹⁸ = 67836247 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 (68098399) 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, 34049195 + 34049196.

It is an arithmetic number, because the mean of its divisors is an integer number (34049196).

Almost surely, 2^68098391 is an apocalyptic number.

68098391 is a deficient number, since it is larger than the sum of its proper divisors (1).

68098391 is an equidigital number, since it uses as much as digits as its factorization.

68098391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 68098391 is about 8252.1749254363. The cubic root of 68098391 is about 408.3622771468.

The spelling of 68098391 in words is "sixty-eight million, ninety-eight thousand, three hundred ninety-one".