11820603 has 16 divisors (see below), whose sum is σ = 17164800. Its totient is φ = 7207200.

The previous prime is 11820581. The next prime is 11820607. The reversal of 11820603 is 30602811.

It is not a de Polignac number, because 11820603 - 2⁶ = 11820539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11820603.

It is not an unprimeable number, because it can be changed into a prime (11820607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1923 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (1072800).

Almost surely, 2^11820603 is an apocalyptic number.

11820603 is a deficient number, since it is larger than the sum of its proper divisors (5344197).

11820603 is a wasteful number, since it uses less digits than its factorization.

11820603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 11820603 is about 3438.1103821722. The cubic root of 11820603 is about 227.7962360788.

The spelling of 11820603 in words is "eleven million, eight hundred twenty thousand, six hundred three".