11835865 has 8 divisors (see below), whose sum is σ = 14266440. Its totient is φ = 9426432.

The previous prime is 11835853. The next prime is 11835877. The reversal of 11835865 is 56853811.

It is an interprime number because it is at equal distance from previous prime (11835853) and next prime (11835877).

It can be written as a sum of positive squares in 4 ways, for example, as 992016 + 10843849 = 996^2 + 3293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11835865 - 2¹⁵ = 11803097 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 4024 + ... + 6313.

It is an arithmetic number, because the mean of its divisors is an integer number (1783305).

Almost surely, 2^11835865 is an apocalyptic number.

It is an amenable number.

11835865 is a deficient number, since it is larger than the sum of its proper divisors (2430575).

11835865 is a wasteful number, since it uses less digits than its factorization.

11835865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571.

The product of its digits is 28800, while the sum is 37.

The square root of 11835865 is about 3440.3291993645. The cubic root of 11835865 is about 227.8942325167.

The spelling of 11835865 in words is "eleven million, eight hundred thirty-five thousand, eight hundred sixty-five".