11685481 has 8 divisors (see below), whose sum is σ = 12268800. Its totient is φ = 11115120.

The previous prime is 11685473. The next prime is 11685497. The reversal of 11685481 is 18458611.

It is a happy number.

11685481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11685481 - 2³ = 11685473 is a prime.

It is a super-2 number, since 2×11685481² = 273100932402722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11685431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (1533600).

Almost surely, 2^11685481 is an apocalyptic number.

It is an amenable number.

11685481 is a deficient number, since it is larger than the sum of its proper divisors (583319).

11685481 is an equidigital number, since it uses as much as digits as its factorization.

11685481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479.

The product of its digits is 7680, while the sum is 34.

The square root of 11685481 is about 3418.4032822357. The cubic root of 11685481 is about 226.9249235834.

The spelling of 11685481 in words is "eleven million, six hundred eighty-five thousand, four hundred eighty-one".