87903 has 6 divisors (see below), whose sum is σ = 126984. Its totient is φ = 58596.

The previous prime is 87887. The next prime is 87911. The reversal of 87903 is 30978.

It is a happy number.

It is not a de Polignac number, because 87903 - 2⁴ = 87887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4875 + ... + 4892.

It is an arithmetic number, because the mean of its divisors is an integer number (21164).

2⁸⁷⁹⁰³ is an apocalyptic number.

87903 is a deficient number, since it is larger than the sum of its proper divisors (39081).

87903 is a wasteful number, since it uses less digits than its factorization.

87903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773 (or 9770 counting only the distinct ones).

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

The square root of 87903 is about 296.4844009387. The cubic root of 87903 is about 44.4632529189.

It can be divided in two parts, 87 and 903, that added together give a triangular number (990 = T₄₄).

The spelling of 87903 in words is "eighty-seven thousand, nine hundred three".