11661441 has 16 divisors (see below), whose sum is σ = 17031360. Its totient is φ = 7038720.

The previous prime is 11661407. The next prime is 11661449. The reversal of 11661441 is 14416611.

It is not a de Polignac number, because 11661441 - 2²² = 7467137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11661449) 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, 9765 + ... + 10893.

It is an arithmetic number, because the mean of its divisors is an integer number (1064460).

Almost surely, 2^11661441 is an apocalyptic number.

11661441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11661441 is a deficient number, since it is larger than the sum of its proper divisors (5369919).

11661441 is a wasteful number, since it uses less digits than its factorization.

11661441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its digits is 576, while the sum is 24.

The square root of 11661441 is about 3414.8852103694. The cubic root of 11661441 is about 226.7692026962.

The spelling of 11661441 in words is "eleven million, six hundred sixty-one thousand, four hundred forty-one".