11641111 has 8 divisors (see below), whose sum is σ = 11869200. Its totient is φ = 11415360.

The previous prime is 11641109. The next prime is 11641121. The reversal of 11641111 is 11114611.

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 11641111 - 2¹ = 11641109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11901 + ... + 12841.

It is an arithmetic number, because the mean of its divisors is an integer number (1483650).

Almost surely, 2^11641111 is an apocalyptic number.

11641111 is a deficient number, since it is larger than the sum of its proper divisors (228089).

11641111 is an equidigital number, since it uses as much as digits as its factorization.

11641111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

The product of its digits is 24, while the sum is 16.

The square root of 11641111 is about 3411.9072378950. The cubic root of 11641111 is about 226.6373465055.

Adding to 11641111 its reverse (11114611), we get a palindrome (22755722).

The spelling of 11641111 in words is "eleven million, six hundred forty-one thousand, one hundred eleven".