68091337 has 2 divisors, whose sum is σ = 68091338. Its totient is φ = 68091336.

The previous prime is 68091301. The next prime is 68091347. The reversal of 68091337 is 73319086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37222201 + 30869136 = 6101^2 + 5556^2 .

It is a cyclic number.

It is not a de Polignac number, because 68091337 - 2⁷ = 68091209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68091296 and 68091305.

It is not a weakly prime, because it can be changed into another prime (68091347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34045668 + 34045669.

It is an arithmetic number, because the mean of its divisors is an integer number (34045669).

Almost surely, 2^68091337 is an apocalyptic number.

It is an amenable number.

68091337 is a deficient number, since it is larger than the sum of its proper divisors (1).

68091337 is an equidigital number, since it uses as much as digits as its factorization.

68091337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 68091337 is about 8251.7475118910. The cubic root of 68091337 is about 408.3481765348.

The spelling of 68091337 in words is "sixty-eight million, ninety-one thousand, three hundred thirty-seven".