678350 has 12 divisors (see below), whose sum is σ = 1261824. Its totient is φ = 271320.

The previous prime is 678343. The next prime is 678367. The reversal of 678350 is 53876.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

678350 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 5 ways as a sum of consecutive naturals, for example, 6734 + ... + 6833.

It is an arithmetic number, because the mean of its divisors is an integer number (105152).

2⁶⁷⁸³⁵⁰ is an apocalyptic number.

678350 is a deficient number, since it is larger than the sum of its proper divisors (583474).

678350 is a wasteful number, since it uses less digits than its factorization.

678350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579 (or 13574 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 678350 is about 823.6200580365. The cubic root of 678350 is about 87.8654106519.

The spelling of 678350 in words is "six hundred seventy-eight thousand, three hundred fifty".