11686481 has 4 divisors (see below), whose sum is σ = 11724132. Its totient is φ = 11648832.

The previous prime is 11686471. The next prime is 11686513. The reversal of 11686481 is 18468611.

It is a happy number.

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 2835856 + 8850625 = 1684^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 11686481 - 2¹⁴ = 11670097 is a prime.

It is a super-2 number, since 2×11686481² = 273147676326722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11686421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18356 + ... + 18981.

It is an arithmetic number, because the mean of its divisors is an integer number (2931033).

Almost surely, 2^11686481 is an apocalyptic number.

It is an amenable number.

11686481 is a deficient number, since it is larger than the sum of its proper divisors (37651).

11686481 is an equidigital number, since it uses as much as digits as its factorization.

11686481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37650.

The product of its digits is 9216, while the sum is 35.

The square root of 11686481 is about 3418.5495462257. The cubic root of 11686481 is about 226.9313965291.

It can be divided in two parts, 11686 and 481, that added together give a cube (12167 = 23³).

The spelling of 11686481 in words is "eleven million, six hundred eighty-six thousand, four hundred eighty-one".