877881 has 4 divisors (see below), whose sum is σ = 1170512. Its totient is φ = 585252.

The previous prime is 877879. The next prime is 877883. The reversal of 877881 is 188778.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (877879) and next prime (877883).

It is not a de Polignac number, because 877881 - 2¹ = 877879 is a prime.

It is a super-2 number, since 2×877881² = 1541350100322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 877881.

It is not an unprimeable number, because it can be changed into a prime (877883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146311 + ... + 146316.

It is an arithmetic number, because the mean of its divisors is an integer number (292628).

2⁸⁷⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

877881 is a deficient number, since it is larger than the sum of its proper divisors (292631).

877881 is a wasteful number, since it uses less digits than its factorization.

877881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292630.

The product of its digits is 25088, while the sum is 39.

The square root of 877881 is about 936.9530404455. The cubic root of 877881 is about 95.7514185130.

The spelling of 877881 in words is "eight hundred seventy-seven thousand, eight hundred eighty-one".