1023603 has 16 divisors (see below), whose sum is σ = 1582080. Its totient is φ = 576576.

The previous prime is 1023601. The next prime is 1023643. The reversal of 1023603 is 3063201.

It is not a de Polignac number, because 1023603 - 2¹ = 1023601 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1023601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (98880).

2^1023603 is an apocalyptic number.

1023603 is a deficient number, since it is larger than the sum of its proper divisors (558477).

1023603 is an equidigital number, since it uses as much as digits as its factorization.

1023603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1023603 is about 1011.7326722015. The cubic root of 1023603 is about 100.7806565616.

Adding to 1023603 its reverse (3063201), we get a palindrome (4086804).

The spelling of 1023603 in words is "one million, twenty-three thousand, six hundred three".