11105661 has 16 divisors (see below), whose sum is σ = 17381504. Its totient is φ = 6174144.

The previous prime is 11105659. The next prime is 11105669. The reversal of 11105661 is 16650111.

It is not a de Polignac number, because 11105661 - 2¹ = 11105659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11105669) 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, 6370 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (1086344).

Almost surely, 2^11105661 is an apocalyptic number.

It is an amenable number.

11105661 is a deficient number, since it is larger than the sum of its proper divisors (6275843).

11105661 is a wasteful number, since it uses less digits than its factorization.

11105661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14340.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 11105661 is about 3332.5157163920. The cubic root of 11105661 is about 223.1078258874.

Adding to 11105661 its reverse (16650111), we get a palindrome (27755772).

The spelling of 11105661 in words is "eleven million, one hundred five thousand, six hundred sixty-one".