68065305 has 64 divisors (see below), whose sum is σ = 140230656. Its totient is φ = 27360000.

The previous prime is 68065247. The next prime is 68065313. The reversal of 68065305 is 50356086.

It is not a de Polignac number, because 68065305 - 2⁷ = 68065177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34855 + ... + 36755.

It is an arithmetic number, because the mean of its divisors is an integer number (2191104).

Almost surely, 2^68065305 is an apocalyptic number.

It is an amenable number.

68065305 is an abundant number, since it is smaller than the sum of its proper divisors (72165351).

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

68065305 is a wasteful number, since it uses less digits than its factorization.

68065305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 68065305 is about 8250.1699982485. The cubic root of 68065305 is about 408.2961313694.

The spelling of 68065305 in words is "sixty-eight million, sixty-five thousand, three hundred five".