11643215 has 8 divisors (see below), whose sum is σ = 14793840. Its totient is φ = 8766592.

The previous prime is 11643209. The next prime is 11643217. The reversal of 11643215 is 51234611.

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 11643215 - 2⁸ = 11642959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643217) 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 7 ways as a sum of consecutive naturals, for example, 68405 + ... + 68574.

It is an arithmetic number, because the mean of its divisors is an integer number (1849230).

Almost surely, 2^11643215 is an apocalyptic number.

11643215 is a deficient number, since it is larger than the sum of its proper divisors (3150625).

11643215 is a wasteful number, since it uses less digits than its factorization.

11643215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137001.

The product of its digits is 720, while the sum is 23.

The square root of 11643215 is about 3412.2155559109. The cubic root of 11643215 is about 226.6509997341.

Adding to 11643215 its reverse (51234611), we get a palindrome (62877826).

The spelling of 11643215 in words is "eleven million, six hundred forty-three thousand, two hundred fifteen".