11861285 has 4 divisors (see below), whose sum is σ = 14233548. Its totient is φ = 9489024.

The previous prime is 11861273. The next prime is 11861293. The reversal of 11861285 is 58216811.

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 2411809 + 9449476 = 1553^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 11861285 - 2⁶ = 11861221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186124 + ... + 1186133.

It is an arithmetic number, because the mean of its divisors is an integer number (3558387).

Almost surely, 2^11861285 is an apocalyptic number.

It is an amenable number.

11861285 is a deficient number, since it is larger than the sum of its proper divisors (2372263).

11861285 is an equidigital number, since it uses as much as digits as its factorization.

11861285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372262.

The product of its digits is 3840, while the sum is 32.

The square root of 11861285 is about 3444.0216317555. The cubic root of 11861285 is about 228.0572660607.

The spelling of 11861285 in words is "eleven million, eight hundred sixty-one thousand, two hundred eighty-five".