8078865 has 16 divisors (see below), whose sum is σ = 13488768. Its totient is φ = 4121216.

The previous prime is 8078831. The next prime is 8078867. The reversal of 8078865 is 5688708.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8078865 - 2¹⁶ = 8013329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8078867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11364 + ... + 12053.

It is an arithmetic number, because the mean of its divisors is an integer number (843048).

Almost surely, 2^8078865 is an apocalyptic number.

It is an amenable number.

8078865 is a deficient number, since it is larger than the sum of its proper divisors (5409903).

8078865 is a wasteful number, since it uses less digits than its factorization.

8078865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23448.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 8078865 is about 2842.3344278955. The cubic root of 8078865 is about 200.6550604698.

The spelling of 8078865 in words is "eight million, seventy-eight thousand, eight hundred sixty-five".