65281305 has 16 divisors (see below), whose sum is σ = 105922944. Its totient is φ = 34325760.

The previous prime is 65281289. The next prime is 65281313. The reversal of 65281305 is 50318256.

65281305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65281305 - 2⁴ = 65281289 is a prime.

It is an unprimeable number.

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, 29584 + ... + 31713.

It is an arithmetic number, because the mean of its divisors is an integer number (6620184).

Almost surely, 2^65281305 is an apocalyptic number.

It is an amenable number.

65281305 is a deficient number, since it is larger than the sum of its proper divisors (40641639).

65281305 is a wasteful number, since it uses less digits than its factorization.

65281305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61376.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 65281305 is about 8079.6847091950. The cubic root of 65281305 is about 402.6517668998.

The spelling of 65281305 in words is "sixty-five million, two hundred eighty-one thousand, three hundred five".