678284 has 12 divisors (see below), whose sum is σ = 1219344. Its totient is φ = 329904.

The previous prime is 678253. The next prime is 678289. The reversal of 678284 is 482876.

It is not an unprimeable number, because it can be changed into a prime (678289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144 + ... + 2439.

It is an arithmetic number, because the mean of its divisors is an integer number (101612).

2⁶⁷⁸²⁸⁴ is an apocalyptic number.

It is an amenable number.

678284 is a deficient number, since it is larger than the sum of its proper divisors (541060).

678284 is a wasteful number, since it uses less digits than its factorization.

678284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624 (or 4622 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 678284 is about 823.5799900435. The cubic root of 678284 is about 87.8625609405.

The spelling of 678284 in words is "six hundred seventy-eight thousand, two hundred eighty-four".