68691043 has 2 divisors, whose sum is σ = 68691044. Its totient is φ = 68691042.

The previous prime is 68691011. The next prime is 68691059. The reversal of 68691043 is 34019686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68691043 - 2⁵ = 68691011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68690993 and 68691011.

It is not a weakly prime, because it can be changed into another prime (68691643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34345521 + 34345522.

It is an arithmetic number, because the mean of its divisors is an integer number (34345522).

Almost surely, 2^68691043 is an apocalyptic number.

68691043 is a deficient number, since it is larger than the sum of its proper divisors (1).

68691043 is an equidigital number, since it uses as much as digits as its factorization.

68691043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68691043 is about 8288.0059724882. The cubic root of 68691043 is about 409.5434994488.

The spelling of 68691043 in words is "sixty-eight million, six hundred ninety-one thousand, forty-three".