678122 has 8 divisors (see below), whose sum is σ = 1020900. Its totient is φ = 337824.

The previous prime is 678103. The next prime is 678133. The reversal of 678122 is 221876.

678122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 52441 = 791^2 + 229^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 678091 and 678100.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678122.

It is an unprimeable number.

678122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404 + ... + 1232.

2⁶⁷⁸¹²² is an apocalyptic number.

678122 is a deficient number, since it is larger than the sum of its proper divisors (342778).

678122 is a wasteful number, since it uses less digits than its factorization.

678122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its digits is 1344, while the sum is 26.

The square root of 678122 is about 823.4816330678. The cubic root of 678122 is about 87.8555654105.

Adding to 678122 its reverse (221876), we get a palindrome (899998).

The spelling of 678122 in words is "six hundred seventy-eight thousand, one hundred twenty-two".