68305999 has 2 divisors, whose sum is σ = 68306000. Its totient is φ = 68305998.

The previous prime is 68305967. The next prime is 68306053. The reversal of 68305999 is 99950386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68305999 - 2⁵ = 68305967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68309999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34152999 + 34153000.

It is an arithmetic number, because the mean of its divisors is an integer number (34153000).

Almost surely, 2^68305999 is an apocalyptic number.

68305999 is a deficient number, since it is larger than the sum of its proper divisors (1).

68305999 is an equidigital number, since it uses as much as digits as its factorization.

68305999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 68305999 is about 8264.7443396635. The cubic root of 68305999 is about 408.7768403789.

The spelling of 68305999 in words is "sixty-eight million, three hundred five thousand, nine hundred ninety-nine".