11845865 has 4 divisors (see below), whose sum is σ = 14215044. Its totient is φ = 9476688.

The previous prime is 11845861. The next prime is 11845877. The reversal of 11845865 is 56854811.

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 6948496 + 4897369 = 2636^2 + 2213^2 .

It is a cyclic number.

It is not a de Polignac number, because 11845865 - 2² = 11845861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11845861) 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 3 ways as a sum of consecutive naturals, for example, 1184582 + ... + 1184591.

It is an arithmetic number, because the mean of its divisors is an integer number (3553761).

Almost surely, 2^11845865 is an apocalyptic number.

It is an amenable number.

11845865 is a deficient number, since it is larger than the sum of its proper divisors (2369179).

11845865 is an equidigital number, since it uses as much as digits as its factorization.

11845865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369178.

The product of its digits is 38400, while the sum is 38.

The square root of 11845865 is about 3441.7822418044. The cubic root of 11845865 is about 227.9583962768.

The spelling of 11845865 in words is "eleven million, eight hundred forty-five thousand, eight hundred sixty-five".