1000803 has 8 divisors (see below), whose sum is σ = 1340416. Its totient is φ = 664200.

The previous prime is 1000793. The next prime is 1000829. The reversal of 1000803 is 3080001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1000803 - 2⁸ = 1000547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000003) 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 7 ways as a sum of consecutive naturals, for example, 198 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (167552).

2^1000803 is an apocalyptic number.

1000803 is a deficient number, since it is larger than the sum of its proper divisors (339613).

1000803 is a wasteful number, since it uses less digits than its factorization.

1000803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1000803 is about 1000.4014194312. The cubic root of 1000803 is about 100.0267595053.

Adding to 1000803 its reverse (3080001), we get a palindrome (4080804).

The spelling of 1000803 in words is "one million, eight hundred three", and thus it is an aban number.