68730305 has 16 divisors (see below), whose sum is σ = 94811904. Its totient is φ = 46852800.

The previous prime is 68730289. The next prime is 68730313. The reversal of 68730305 is 50303786.

It is a happy number.

It is not a de Polignac number, because 68730305 - 2⁴ = 68730289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380 + ... + 11730.

It is an arithmetic number, because the mean of its divisors is an integer number (5925744).

Almost surely, 2^68730305 is an apocalyptic number.

It is an amenable number.

68730305 is a deficient number, since it is larger than the sum of its proper divisors (26081599).

68730305 is a wasteful number, since it uses less digits than its factorization.

68730305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 68730305 is about 8290.3742376325. The cubic root of 68730305 is about 409.6215126977.

The spelling of 68730305 in words is "sixty-eight million, seven hundred thirty thousand, three hundred five".