678471 has 8 divisors (see below), whose sum is σ = 952320. Its totient is φ = 428472.

The previous prime is 678463. The next prime is 678479. The reversal of 678471 is 174876.

678471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (678463) and next prime (678479).

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

It is not a de Polignac number, because 678471 - 2³ = 678463 is a prime.

It is a super-3 number, since 3×678471³ = 936947210463243333, which contains 333 as substring.

678471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678479) 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, 5895 + ... + 6008.

It is an arithmetic number, because the mean of its divisors is an integer number (119040).

2⁶⁷⁸⁴⁷¹ is an apocalyptic number.

678471 is a deficient number, since it is larger than the sum of its proper divisors (273849).

678471 is a wasteful number, since it uses less digits than its factorization.

678471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11925.

The product of its digits is 9408, while the sum is 33.

The square root of 678471 is about 823.6935109614. The cubic root of 678471 is about 87.8706346428.

The spelling of 678471 in words is "six hundred seventy-eight thousand, four hundred seventy-one".