1208603 has 4 divisors (see below), whose sum is σ = 1318488. Its totient is φ = 1098720.

The previous prime is 1208591. The next prime is 1208651. The reversal of 1208603 is 3068021.

Added to its reverse (3068021) it gives a square (4276624 = 2068²).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3068021 = 11 ⋅278911.

It is a cyclic number.

It is not a de Polignac number, because 1208603 - 2¹² = 1204507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208663) 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, 54926 + ... + 54947.

It is an arithmetic number, because the mean of its divisors is an integer number (329622).

2^1208603 is an apocalyptic number.

1208603 is a deficient number, since it is larger than the sum of its proper divisors (109885).

1208603 is a wasteful number, since it uses less digits than its factorization.

1208603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109884.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1208603 is about 1099.3648166100. The cubic root of 1208603 is about 106.5191983434.

Adding to 1208603 its reverse (3068021), we get a square (4276624 = 2068²).

The spelling of 1208603 in words is "one million, two hundred eight thousand, six hundred three".