1097603 has 4 divisors (see below), whose sum is σ = 1182048. Its totient is φ = 1013160.

The previous prime is 1097599. The next prime is 1097627. The reversal of 1097603 is 3067901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3067901 = 23 ⋅133387.

It is a cyclic number.

It is not a de Polignac number, because 1097603 - 2² = 1097599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42203 + ... + 42228.

It is an arithmetic number, because the mean of its divisors is an integer number (295512).

2^1097603 is an apocalyptic number.

1097603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1097603 is a deficient number, since it is larger than the sum of its proper divisors (84445).

1097603 is an equidigital number, since it uses as much as digits as its factorization.

1097603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84444.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 1097603 is about 1047.6655000524. The cubic root of 1097603 is about 103.1529759422.

The spelling of 1097603 in words is "one million, ninety-seven thousand, six hundred three".