678126 has 8 divisors (see below), whose sum is σ = 1356264. Its totient is φ = 226040.

The previous prime is 678103. The next prime is 678133. The reversal of 678126 is 621876.

It is a happy number.

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

678126 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 678093 and 678102.

It is a congruent number.

It is an unprimeable number.

678126 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 56505 + ... + 56516.

It is an arithmetic number, because the mean of its divisors is an integer number (169533).

2⁶⁷⁸¹²⁶ is an apocalyptic number.

678126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

678126 is a wasteful number, since it uses less digits than its factorization.

678126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113026.

The product of its digits is 4032, while the sum is 30.

The square root of 678126 is about 823.4840617765. The cubic root of 678126 is about 87.8557381530.

The spelling of 678126 in words is "six hundred seventy-eight thousand, one hundred twenty-six".