68357903 has 2 divisors, whose sum is σ = 68357904. Its totient is φ = 68357902.

The previous prime is 68357899. The next prime is 68357921. The reversal of 68357903 is 30975386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68357903 - 2² = 68357899 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68357983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34178951 + 34178952.

It is an arithmetic number, because the mean of its divisors is an integer number (34178952).

Almost surely, 2^68357903 is an apocalyptic number.

68357903 is a deficient number, since it is larger than the sum of its proper divisors (1).

68357903 is an equidigital number, since it uses as much as digits as its factorization.

68357903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 68357903 is about 8267.8838284049. The cubic root of 68357903 is about 408.8803538895.

The spelling of 68357903 in words is "sixty-eight million, three hundred fifty-seven thousand, nine hundred three".