8245865 has 4 divisors (see below), whose sum is σ = 9895044. Its totient is φ = 6596688.

The previous prime is 8245843. The next prime is 8245877. The reversal of 8245865 is 5685428.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4116841 + 4129024 = 2029^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 8245865 - 2¹⁸ = 7983721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824582 + ... + 824591.

It is an arithmetic number, because the mean of its divisors is an integer number (2473761).

Almost surely, 2^8245865 is an apocalyptic number.

It is an amenable number.

8245865 is a deficient number, since it is larger than the sum of its proper divisors (1649179).

8245865 is a wasteful number, since it uses less digits than its factorization.

8245865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649178.

The product of its digits is 76800, while the sum is 38.

The square root of 8245865 is about 2871.5614219445. The cubic root of 8245865 is about 202.0282367481.

The spelling of 8245865 in words is "eight million, two hundred forty-five thousand, eight hundred sixty-five".