678171 has 8 divisors (see below), whose sum is σ = 973840. Its totient is φ = 417312.

The previous prime is 678169. The next prime is 678179. The reversal of 678171 is 171876.

678171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678171 - 2¹ = 678169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678179) 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, 8656 + ... + 8733.

It is an arithmetic number, because the mean of its divisors is an integer number (121730).

2⁶⁷⁸¹⁷¹ is an apocalyptic number.

678171 is a deficient number, since it is larger than the sum of its proper divisors (295669).

678171 is a wasteful number, since it uses less digits than its factorization.

678171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17405.

The product of its digits is 2352, while the sum is 30.

The square root of 678171 is about 823.5113842565. The cubic root of 678171 is about 87.8576814599.

The spelling of 678171 in words is "six hundred seventy-eight thousand, one hundred seventy-one".