11116665 has 24 divisors (see below), whose sum is σ = 22022208. Its totient is φ = 5081760.

The previous prime is 11116649. The next prime is 11116667. The reversal of 11116665 is 56661111.

It is not a de Polignac number, because 11116665 - 2⁴ = 11116649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11116667) 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 23 ways as a sum of consecutive naturals, for example, 17331 + ... + 17960.

It is an arithmetic number, because the mean of its divisors is an integer number (917592).

Almost surely, 2^11116665 is an apocalyptic number.

11116665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11116665 is a deficient number, since it is larger than the sum of its proper divisors (10905543).

11116665 is a wasteful number, since it uses less digits than its factorization.

11116665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35309 (or 35306 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 11116665 is about 3334.1663125885. The cubic root of 11116665 is about 223.1814900633.

Adding to 11116665 its reverse (56661111), we get a palindrome (67777776).

It can be divided in two parts, 11116 and 665, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 11116665 in words is "eleven million, one hundred sixteen thousand, six hundred sixty-five".