11163965 has 4 divisors (see below), whose sum is σ = 13396764. Its totient is φ = 8931168.

The previous prime is 11163959. The next prime is 11163989. The reversal of 11163965 is 56936111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56936111 = 17 ⋅3349183.

It can be written as a sum of positive squares in 2 ways, for example, as 6240004 + 4923961 = 2498^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 11163965 - 2⁴ = 11163949 is a prime.

It is a super-2 number, since 2×11163965² = 249268229042450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116392 + ... + 1116401.

It is an arithmetic number, because the mean of its divisors is an integer number (3349191).

Almost surely, 2^11163965 is an apocalyptic number.

It is an amenable number.

11163965 is a deficient number, since it is larger than the sum of its proper divisors (2232799).

11163965 is an equidigital number, since it uses as much as digits as its factorization.

11163965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232798.

The product of its digits is 4860, while the sum is 32.

The square root of 11163965 is about 3341.2520108486. The cubic root of 11163965 is about 223.4975784946.

The spelling of 11163965 in words is "eleven million, one hundred sixty-three thousand, nine hundred sixty-five".