678338 has 8 divisors (see below), whose sum is σ = 1071120. Its totient is φ = 321300.

The previous prime is 678329. The next prime is 678341. The reversal of 678338 is 833876.

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 = 678298 and 678307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8888 + ... + 8963.

It is an arithmetic number, because the mean of its divisors is an integer number (133890).

2⁶⁷⁸³³⁸ is an apocalyptic number.

678338 is a deficient number, since it is larger than the sum of its proper divisors (392782).

678338 is a wasteful number, since it uses less digits than its factorization.

678338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17872.

The product of its digits is 24192, while the sum is 35.

The square root of 678338 is about 823.6127730918. The cubic root of 678338 is about 87.8648925363.

The spelling of 678338 in words is "six hundred seventy-eight thousand, three hundred thirty-eight".