11955623 has 4 divisors (see below), whose sum is σ = 12107040. Its totient is φ = 11804208.

The previous prime is 11955599. The next prime is 11955649. The reversal of 11955623 is 32655911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11955623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11955623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11955683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75590 + ... + 75747.

It is an arithmetic number, because the mean of its divisors is an integer number (3026760).

Almost surely, 2^11955623 is an apocalyptic number.

11955623 is a deficient number, since it is larger than the sum of its proper divisors (151417).

11955623 is an equidigital number, since it uses as much as digits as its factorization.

11955623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151416.

The product of its digits is 8100, while the sum is 32.

The square root of 11955623 is about 3457.6904141348. The cubic root of 11955623 is about 228.6602833299.

The spelling of 11955623 in words is "eleven million, nine hundred fifty-five thousand, six hundred twenty-three".