8128065 has 16 divisors (see below), whose sum is σ = 14187456. Its totient is φ = 3940800.

The previous prime is 8128063. The next prime is 8128069. The reversal of 8128065 is 5608218.

It is not a de Polignac number, because 8128065 - 2¹ = 8128063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8128061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24466 + ... + 24795.

It is an arithmetic number, because the mean of its divisors is an integer number (886716).

Almost surely, 2^8128065 is an apocalyptic number.

It is an amenable number.

8128065 is a deficient number, since it is larger than the sum of its proper divisors (6059391).

8128065 is a wasteful number, since it uses less digits than its factorization.

8128065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49280.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 8128065 is about 2850.9761486200. The cubic root of 8128065 is about 201.0615637760.

The spelling of 8128065 in words is "eight million, one hundred twenty-eight thousand, sixty-five".