8428065 has 24 divisors (see below), whose sum is σ = 13800384. Its totient is φ = 4392000.

The previous prime is 8428061. The next prime is 8428081. The reversal of 8428065 is 5608248.

8428065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8428065 - 2² = 8428061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8428061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55740 + ... + 55890.

It is an arithmetic number, because the mean of its divisors is an integer number (575016).

Almost surely, 2^8428065 is an apocalyptic number.

It is an amenable number.

8428065 is a deficient number, since it is larger than the sum of its proper divisors (5372319).

8428065 is a wasteful number, since it uses less digits than its factorization.

8428065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8428065 is about 2903.1129843670. The cubic root of 8428065 is about 203.5054098898.

The spelling of 8428065 in words is "eight million, four hundred twenty-eight thousand, sixty-five".