881791 has 4 divisors (see below), whose sum is σ = 883872. Its totient is φ = 879712.

The previous prime is 881779. The next prime is 881813. The reversal of 881791 is 197188.

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 881791 - 2⁷ = 881663 is a prime.

It is a Duffinian number.

881791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881711) 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, 151 + ... + 1336.

It is an arithmetic number, because the mean of its divisors is an integer number (220968).

2⁸⁸¹⁷⁹¹ is an apocalyptic number.

881791 is a deficient number, since it is larger than the sum of its proper divisors (2081).

881791 is a wasteful number, since it uses less digits than its factorization.

881791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its digits is 4032, while the sum is 34.

The square root of 881791 is about 939.0372729557. The cubic root of 881791 is about 95.8933639429.

The spelling of 881791 in words is "eight hundred eighty-one thousand, seven hundred ninety-one".