68353999 has 8 divisors (see below), whose sum is σ = 81515520. Its totient is φ = 56041656.

The previous prime is 68353973. The next prime is 68354021. The reversal of 68353999 is 99935386.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68353999 - 2⁹ = 68353487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68353949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212119 + ... + 212440.

It is an arithmetic number, because the mean of its divisors is an integer number (10189440).

Almost surely, 2^68353999 is an apocalyptic number.

68353999 is a deficient number, since it is larger than the sum of its proper divisors (13161521).

68353999 is a wasteful number, since it uses less digits than its factorization.

68353999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424589.

The product of its digits is 1574640, while the sum is 52.

The square root of 68353999 is about 8267.6477307636. The cubic root of 68353999 is about 408.8725698625.

The spelling of 68353999 in words is "sixty-eight million, three hundred fifty-three thousand, nine hundred ninety-nine".