881881 has 16 divisors (see below), whose sum is σ = 1185408. Its totient is φ = 633600.

The previous prime is 881849. The next prime is 881897. The reversal of 881881 is 188188.

It is not a de Polignac number, because 881881 - 2⁵ = 881849 is a prime.

It is a super-2 number, since 2×881881² = 1555428196322, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (881681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561 + ... + 1441.

It is an arithmetic number, because the mean of its divisors is an integer number (74088).

2⁸⁸¹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

881881 is a deficient number, since it is larger than the sum of its proper divisors (303527).

881881 is a wasteful number, since it uses less digits than its factorization.

881881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912.

The product of its digits is 4096, while the sum is 34.

The square root of 881881 is about 939.0851931534. The cubic root of 881881 is about 95.8966262840.

The spelling of 881881 in words is "eight hundred eighty-one thousand, eight hundred eighty-one".