847881 has 16 divisors (see below), whose sum is σ = 1297920. Its totient is φ = 546480.

The previous prime is 847871. The next prime is 847883. The reversal of 847881 is 188748.

847881 = T₁₀ + T₁₁ + ... + T₁₇₁.

It is not a de Polignac number, because 847881 - 2⁶ = 847817 is a prime.

It is a super-2 number, since 2×847881² = 1437804380322, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847881.

It is not an unprimeable number, because it can be changed into a prime (847883) 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, 331 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (81120).

2⁸⁴⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

847881 is a deficient number, since it is larger than the sum of its proper divisors (450039).

847881 is a wasteful number, since it uses less digits than its factorization.

847881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1047 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 847881 is about 920.8045395197. The cubic root of 847881 is about 94.6480420832.

It can be divided in two parts, 847 and 881, that added together give a cube (1728 = 12³).

The spelling of 847881 in words is "eight hundred forty-seven thousand, eight hundred eighty-one".