1083603 has 6 divisors (see below), whose sum is σ = 1447212. Its totient is φ = 721200.

The previous prime is 1083601. The next prime is 1083611. The reversal of 1083603 is 3063801.

It is not a de Polignac number, because 1083603 - 2¹ = 1083601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1083603.

It is not an unprimeable number, because it can be changed into a prime (1083601) 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, 1503 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (241202).

2^1083603 is an apocalyptic number.

1083603 is a deficient number, since it is larger than the sum of its proper divisors (363609).

1083603 is an frugal number, since it uses more digits than its factorization.

1083603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1083603 is about 1040.9625353489. The cubic root of 1083603 is about 102.7125235543.

Multiplying 1083603 by its product of nonzero digits (432), we get a square (468116496 = 21636²).

The spelling of 1083603 in words is "one million, eighty-three thousand, six hundred three".