104505865 has 4 divisors (see below), whose sum is σ = 125407044. Its totient is φ = 83604688.

The previous prime is 104505829. The next prime is 104505889. The reversal of 104505865 is 568505401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 568505401 = 53 ⋅10726517.

It can be written as a sum of positive squares in 2 ways, for example, as 62346816 + 42159049 = 7896^2 + 6493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104505865 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104505865.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10450582 + ... + 10450591.

It is an arithmetic number, because the mean of its divisors is an integer number (31351761).

Almost surely, 2^104505865 is an apocalyptic number.

It is an amenable number.

104505865 is a deficient number, since it is larger than the sum of its proper divisors (20901179).

104505865 is an equidigital number, since it uses as much as digits as its factorization.

104505865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20901178.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 104505865 is about 10222.8110126325. The cubic root of 104505865 is about 471.0281776559.

The spelling of 104505865 in words is "one hundred four million, five hundred five thousand, eight hundred sixty-five".