1089603 has 6 divisors (see below), whose sum is σ = 1573884. Its totient is φ = 726396.

The previous prime is 1089563. The next prime is 1089611. The reversal of 1089603 is 3069801.

It is not a de Polignac number, because 1089603 - 2⁹ = 1089091 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1089653) 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, 60525 + ... + 60542.

It is an arithmetic number, because the mean of its divisors is an integer number (262314).

2^1089603 is an apocalyptic number.

1089603 is a deficient number, since it is larger than the sum of its proper divisors (484281).

1089603 is a wasteful number, since it uses less digits than its factorization.

1089603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121073 (or 121070 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1089603 is about 1043.8405050581. The cubic root of 1089603 is about 102.9017506580.

The spelling of 1089603 in words is "one million, eighty-nine thousand, six hundred three".