887791 has 4 divisors (see below), whose sum is σ = 940032. Its totient is φ = 835552.

The previous prime is 887759. The next prime is 887819. The reversal of 887791 is 197788.

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 887791 - 2⁵ = 887759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887701) 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, 26095 + ... + 26128.

It is an arithmetic number, because the mean of its divisors is an integer number (235008).

2⁸⁸⁷⁷⁹¹ is an apocalyptic number.

887791 is a deficient number, since it is larger than the sum of its proper divisors (52241).

887791 is a wasteful number, since it uses less digits than its factorization.

887791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52240.

The product of its digits is 28224, while the sum is 40.

The square root of 887791 is about 942.2266181763. The cubic root of 887791 is about 96.1103693004.

The spelling of 887791 in words is "eight hundred eighty-seven thousand, seven hundred ninety-one".