847878 has 16 divisors (see below), whose sum is σ = 1705536. Its totient is φ = 281000.

The previous prime is 847871. The next prime is 847883. The reversal of 847878 is 878748.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847878.

It is not an unprimeable number, because it can be changed into a prime (847871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (106596).

2⁸⁴⁷⁸⁷⁸ is an apocalyptic number.

847878 is an abundant number, since it is smaller than the sum of its proper divisors (857658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

847878 is a wasteful number, since it uses less digits than its factorization.

847878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its digits is 100352, while the sum is 42.

The square root of 847878 is about 920.8029105080. The cubic root of 847878 is about 94.6479304541.

The spelling of 847878 in words is "eight hundred forty-seven thousand, eight hundred seventy-eight".