68416305 has 16 divisors (see below), whose sum is σ = 109570560. Its totient is φ = 36453888.

The previous prime is 68416303. The next prime is 68416333. The reversal of 68416305 is 50361486.

It is not a de Polignac number, because 68416305 - 2¹ = 68416303 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68416301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25089 + ... + 27681.

It is an arithmetic number, because the mean of its divisors is an integer number (6848160).

Almost surely, 2^68416305 is an apocalyptic number.

It is an amenable number.

68416305 is a deficient number, since it is larger than the sum of its proper divisors (41154255).

68416305 is a wasteful number, since it uses less digits than its factorization.

68416305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 68416305 is about 8271.4149333714. The cubic root of 68416305 is about 408.9967639026.

The spelling of 68416305 in words is "sixty-eight million, four hundred sixteen thousand, three hundred five".