11806623 has 6 divisors (see below), whose sum is σ = 17054024. Its totient is φ = 7871076.

The previous prime is 11806609. The next prime is 11806633. The reversal of 11806623 is 32660811.

It is not a de Polignac number, because 11806623 - 2⁴ = 11806607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11806633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 655915 + ... + 655932.

Almost surely, 2^11806623 is an apocalyptic number.

11806623 is a deficient number, since it is larger than the sum of its proper divisors (5247401).

11806623 is a wasteful number, since it uses less digits than its factorization.

11806623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311853 (or 1311850 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 11806623 is about 3436.0766871535. The cubic root of 11806623 is about 227.7063972424.

The spelling of 11806623 in words is "eleven million, eight hundred six thousand, six hundred twenty-three".