68347091 has 2 divisors, whose sum is σ = 68347092. Its totient is φ = 68347090.

The previous prime is 68347079. The next prime is 68347093. The reversal of 68347091 is 19074386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68347091 - 2²² = 64152787 is a prime.

Together with 68347093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68347093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34173545 + 34173546.

It is an arithmetic number, because the mean of its divisors is an integer number (34173546).

Almost surely, 2^68347091 is an apocalyptic number.

68347091 is a deficient number, since it is larger than the sum of its proper divisors (1).

68347091 is an equidigital number, since it uses as much as digits as its factorization.

68347091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 68347091 is about 8267.2299472072. The cubic root of 68347091 is about 408.8587955557.

It can be divided in two parts, 683 and 47091, that added together give a palindrome (47774).

The spelling of 68347091 in words is "sixty-eight million, three hundred forty-seven thousand, ninety-one".