11816623 has 8 divisors (see below), whose sum is σ = 14543648. Its totient is φ = 9349344.

The previous prime is 11816591. The next prime is 11816647. The reversal of 11816623 is 32661811.

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 11816623 - 2⁵ = 11816591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11816591 and 11816600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11816923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64836 + ... + 65017.

It is an arithmetic number, because the mean of its divisors is an integer number (1817956).

Almost surely, 2^11816623 is an apocalyptic number.

11816623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11816623 is a deficient number, since it is larger than the sum of its proper divisors (2727025).

11816623 is a wasteful number, since it uses less digits than its factorization.

11816623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129873.

The product of its digits is 1728, while the sum is 28.

The square root of 11816623 is about 3437.5315271282. The cubic root of 11816623 is about 227.7706668589.

The spelling of 11816623 in words is "eleven million, eight hundred sixteen thousand, six hundred twenty-three".