11643087 has 4 divisors (see below), whose sum is σ = 15524120. Its totient is φ = 7762056.

The previous prime is 11643041. The next prime is 11643089. The reversal of 11643087 is 78034611.

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: 78034611 = 3 ⋅26011537.

It is not a de Polignac number, because 11643087 - 2⁷ = 11642959 is a prime.

It is a super-2 number, since 2×11643087² = 271122949779138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643089) by changing a digit.

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, 1940512 + ... + 1940517.

It is an arithmetic number, because the mean of its divisors is an integer number (3881030).

Almost surely, 2^11643087 is an apocalyptic number.

11643087 is a deficient number, since it is larger than the sum of its proper divisors (3881033).

11643087 is an equidigital number, since it uses as much as digits as its factorization.

11643087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881032.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 11643087 is about 3412.1967997172. The cubic root of 11643087 is about 226.6501691665.

Adding to 11643087 its reverse (78034611), we get a palindrome (89677698).

The spelling of 11643087 in words is "eleven million, six hundred forty-three thousand, eighty-seven".