678854 has 16 divisors (see below), whose sum is σ = 1131840. Its totient is φ = 302760.

The previous prime is 678833. The next prime is 678859. The reversal of 678854 is 458876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678859) 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 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 1559.

It is an arithmetic number, because the mean of its divisors is an integer number (70740).

2⁶⁷⁸⁸⁵⁴ is an apocalyptic number.

678854 is a deficient number, since it is larger than the sum of its proper divisors (452986).

678854 is a wasteful number, since it uses less digits than its factorization.

678854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595.

The product of its digits is 53760, while the sum is 38.

The square root of 678854 is about 823.9259675481. The cubic root of 678854 is about 87.8871659916.

The spelling of 678854 in words is "six hundred seventy-eight thousand, eight hundred fifty-four".