68716305 has 72 divisors (see below), whose sum is σ = 141276096. Its totient is φ = 30265920.

The previous prime is 68716273. The next prime is 68716313. The reversal of 68716305 is 50361786.

It is not a de Polignac number, because 68716305 - 2⁵ = 68716273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68716305.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 302602 + ... + 302828.

It is an arithmetic number, because the mean of its divisors is an integer number (1962168).

Almost surely, 2^68716305 is an apocalyptic number.

It is an amenable number.

68716305 is an abundant number, since it is smaller than the sum of its proper divisors (72559791).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68716305 is a wasteful number, since it uses less digits than its factorization.

68716305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 68716305 is about 8289.5298419150. The cubic root of 68716305 is about 409.5936982298.

The spelling of 68716305 in words is "sixty-eight million, seven hundred sixteen thousand, three hundred five".