11788643 has 4 divisors (see below), whose sum is σ = 11796288. Its totient is φ = 11781000.

The previous prime is 11788639. The next prime is 11788663. The reversal of 11788643 is 34688711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11788643 - 2² = 11788639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11788597 and 11788606.

It is not an unprimeable number, because it can be changed into a prime (11788663) 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, 608 + ... + 4893.

It is an arithmetic number, because the mean of its divisors is an integer number (2949072).

Almost surely, 2^11788643 is an apocalyptic number.

11788643 is a deficient number, since it is larger than the sum of its proper divisors (7645).

11788643 is an equidigital number, since it uses as much as digits as its factorization.

11788643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644.

The product of its digits is 32256, while the sum is 38.

The square root of 11788643 is about 3433.4593342575. The cubic root of 11788643 is about 227.5907491275.

The spelling of 11788643 in words is "eleven million, seven hundred eighty-eight thousand, six hundred forty-three".