11895865 has 4 divisors (see below), whose sum is σ = 14275044. Its totient is φ = 9516688.

The previous prime is 11895827. The next prime is 11895883. The reversal of 11895865 is 56859811.

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 4968441 + 6927424 = 2229^2 + 2632^2 .

It is a cyclic number.

It is not a de Polignac number, because 11895865 - 2⁹ = 11895353 is a prime.

It is a Duffinian number.

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, 1189582 + ... + 1189591.

It is an arithmetic number, because the mean of its divisors is an integer number (3568761).

Almost surely, 2^11895865 is an apocalyptic number.

It is an amenable number.

11895865 is a deficient number, since it is larger than the sum of its proper divisors (2379179).

11895865 is an equidigital number, since it uses as much as digits as its factorization.

11895865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379178.

The product of its digits is 86400, while the sum is 43.

The square root of 11895865 is about 3449.0382717505. The cubic root of 11895865 is about 228.2786745873.

The spelling of 11895865 in words is "eleven million, eight hundred ninety-five thousand, eight hundred sixty-five".