11466581 has 16 divisors (see below), whose sum is σ = 13891584. Its totient is φ = 9252144.

The previous prime is 11466577. The next prime is 11466583. The reversal of 11466581 is 18566411.

11466581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11466581 - 2² = 11466577 is a prime.

It is a super-2 number, since 2×11466581² = 262964959659122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11466583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10256 + ... + 11318.

It is an arithmetic number, because the mean of its divisors is an integer number (868224).

Almost surely, 2^11466581 is an apocalyptic number.

It is an amenable number.

11466581 is a deficient number, since it is larger than the sum of its proper divisors (2425003).

11466581 is a wasteful number, since it uses less digits than its factorization.

11466581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160.

The product of its digits is 5760, while the sum is 32.

The square root of 11466581 is about 3386.2340438901. The cubic root of 11466581 is about 225.4990142582.

The spelling of 11466581 in words is "eleven million, four hundred sixty-six thousand, five hundred eighty-one".