678231 has 12 divisors (see below), whose sum is σ = 987480. Its totient is φ = 448560.

The previous prime is 678229. The next prime is 678253. The reversal of 678231 is 132876.

It is not a de Polignac number, because 678231 - 2¹ = 678229 is a prime.

It is a super-2 number, since 2×678231² = 919994578722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 678195 and 678204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1401 + ... + 1821.

It is an arithmetic number, because the mean of its divisors is an integer number (82290).

2⁶⁷⁸²³¹ is an apocalyptic number.

678231 is a deficient number, since it is larger than the sum of its proper divisors (309249).

678231 is a wasteful number, since it uses less digits than its factorization.

678231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 603 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 678231 is about 823.5478128196. The cubic root of 678231 is about 87.8602724020.

It can be divided in two parts, 678 and 231, that added together give a palindrome (909).

The spelling of 678231 in words is "six hundred seventy-eight thousand, two hundred thirty-one".