678548 has 12 divisors (see below), whose sum is σ = 1278900. Its totient is φ = 313152.

The previous prime is 678541. The next prime is 678553. The reversal of 678548 is 845876.

It can be written as a sum of positive squares in 2 ways, for example, as 232324 + 446224 = 482^2 + 668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678541) by changing a digit.

678548 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, 6473 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (106575).

2⁶⁷⁸⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

678548 is a deficient number, since it is larger than the sum of its proper divisors (600352).

678548 is a wasteful number, since it uses less digits than its factorization.

678548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13066 (or 13064 counting only the distinct ones).

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

The square root of 678548 is about 823.7402503217. The cubic root of 678548 is about 87.8739586772.

The spelling of 678548 in words is "six hundred seventy-eight thousand, five hundred forty-eight".