68013943 has 2 divisors, whose sum is σ = 68013944. Its totient is φ = 68013942.

The previous prime is 68013937. The next prime is 68013947. The reversal of 68013943 is 34931086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68013943 - 2⁹ = 68013431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68013899 and 68013908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68013947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34006971 + 34006972.

It is an arithmetic number, because the mean of its divisors is an integer number (34006972).

Almost surely, 2^68013943 is an apocalyptic number.

68013943 is a deficient number, since it is larger than the sum of its proper divisors (1).

68013943 is an equidigital number, since it uses as much as digits as its factorization.

68013943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 68013943 is about 8247.0566264577. The cubic root of 68013943 is about 408.1934055975.

The spelling of 68013943 in words is "sixty-eight million, thirteen thousand, nine hundred forty-three".