870903 has 24 divisors (see below), whose sum is σ = 1447680. Its totient is φ = 498960.

The previous prime is 870901. The next prime is 870907. The reversal of 870903 is 309078.

It is a happy number.

It is not a de Polignac number, because 870903 - 2¹ = 870901 is a prime.

It is an alternating number because its digits alternate between even and odd.

870903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1650 + ... + 2112.

It is an arithmetic number, because the mean of its divisors is an integer number (60320).

2⁸⁷⁰⁹⁰³ is an apocalyptic number.

870903 is a deficient number, since it is larger than the sum of its proper divisors (576777).

870903 is a wasteful number, since it uses less digits than its factorization.

870903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 870903 is about 933.2218385786. The cubic root of 870903 is about 95.4970440319.

The spelling of 870903 in words is "eight hundred seventy thousand, nine hundred three".