6895865 has 4 divisors (see below), whose sum is σ = 8275044. Its totient is φ = 5516688.

The previous prime is 6895853. The next prime is 6895871. The reversal of 6895865 is 5685986.

It is a happy number.

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 1073296 + 5822569 = 1036^2 + 2413^2 .

It is a cyclic number.

It is not a de Polignac number, because 6895865 - 2⁴ = 6895849 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 689582 + ... + 689591.

It is an arithmetic number, because the mean of its divisors is an integer number (2068761).

Almost surely, 2^6895865 is an apocalyptic number.

It is an amenable number.

6895865 is a deficient number, since it is larger than the sum of its proper divisors (1379179).

6895865 is a wasteful number, since it uses less digits than its factorization.

6895865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379178.

The product of its digits is 518400, while the sum is 47.

The square root of 6895865 is about 2625.9979055590. The cubic root of 6895865 is about 190.3397890168.

The spelling of 6895865 in words is "six million, eight hundred ninety-five thousand, eight hundred sixty-five".