887491 has 4 divisors (see below), whose sum is σ = 968184. Its totient is φ = 806800.

The previous prime is 887483. The next prime is 887503. The reversal of 887491 is 194788.

887491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 887491 - 2³ = 887483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 887491.

It is not an unprimeable number, because it can be changed into a prime (887401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40330 + ... + 40351.

It is an arithmetic number, because the mean of its divisors is an integer number (242046).

2⁸⁸⁷⁴⁹¹ is an apocalyptic number.

887491 is a deficient number, since it is larger than the sum of its proper divisors (80693).

887491 is a wasteful number, since it uses less digits than its factorization.

887491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80692.

The product of its digits is 16128, while the sum is 37.

The square root of 887491 is about 942.0674073547. The cubic root of 887491 is about 96.0995422930.

It can be divided in two parts, 887 and 491, that added together give a triangular number (1378 = T₅₂).

The spelling of 887491 in words is "eight hundred eighty-seven thousand, four hundred ninety-one".