1098603 has 28 divisors (see below), whose sum is σ = 1810008. Its totient is φ = 660960.

The previous prime is 1098593. The next prime is 1098613. The reversal of 1098603 is 3068901.

It is an interprime number because it is at equal distance from previous prime (1098593) and next prime (1098613).

It is a de Polignac number, because none of the positive numbers 2^k-1098603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1098613) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7951 + ... + 8087.

2^1098603 is an apocalyptic number.

1098603 is a deficient number, since it is larger than the sum of its proper divisors (711405).

1098603 is an equidigital number, since it uses as much as digits as its factorization.

1098603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 151 counting only the distinct ones).

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

The square root of 1098603 is about 1048.1426429642. The cubic root of 1098603 is about 103.1842931747.

The spelling of 1098603 in words is "one million, ninety-eight thousand, six hundred three".