68376391 has 2 divisors, whose sum is σ = 68376392. Its totient is φ = 68376390.

The previous prime is 68376379. The next prime is 68376409. The reversal of 68376391 is 19367386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68376391 - 2¹⁷ = 68245319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68376331) 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, 34188195 + 34188196.

It is an arithmetic number, because the mean of its divisors is an integer number (34188196).

Almost surely, 2^68376391 is an apocalyptic number.

68376391 is a deficient number, since it is larger than the sum of its proper divisors (1).

68376391 is an equidigital number, since it uses as much as digits as its factorization.

68376391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 68376391 is about 8269.0018140039. The cubic root of 68376391 is about 408.9172123372.

The spelling of 68376391 in words is "sixty-eight million, three hundred seventy-six thousand, three hundred ninety-one".