881864 has 8 divisors (see below), whose sum is σ = 1653510. Its totient is φ = 440928.

The previous prime is 881849. The next prime is 881897. The reversal of 881864 is 468188.

881864 = T₂₅₉ + T₂₆₀ + ... + T₂₈₂.

881864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 448900 + 432964 = 670^2 + 658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×881864² = 1555368228992, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55109 + ... + 55124.

2⁸⁸¹⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

881864 is a deficient number, since it is larger than the sum of its proper divisors (771646).

881864 is a wasteful number, since it uses less digits than its factorization.

881864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110239 (or 110235 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 881864 is about 939.0761417478. The cubic root of 881864 is about 95.8960100810.

The spelling of 881864 in words is "eight hundred eighty-one thousand, eight hundred sixty-four".