870003 has 6 divisors (see below), whose sum is σ = 1256684. Its totient is φ = 579996.

The previous prime is 869989. The next prime is 870007. The reversal of 870003 is 300078.

It is not a de Polignac number, because 870003 - 2⁸ = 869747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870007) 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 5 ways as a sum of consecutive naturals, for example, 48325 + ... + 48342.

2⁸⁷⁰⁰⁰³ is an apocalyptic number.

870003 is a deficient number, since it is larger than the sum of its proper divisors (386681).

870003 is a wasteful number, since it uses less digits than its factorization.

870003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96673 (or 96670 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 870003 is about 932.7395134763. The cubic root of 870003 is about 95.4641368222.

The spelling of 870003 in words is "eight hundred seventy thousand, three".