678547 has 8 divisors (see below), whose sum is σ = 725760. Its totient is φ = 632520.

The previous prime is 678541. The next prime is 678553. The reversal of 678547 is 745876.

It is a happy number.

678547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (678541) and next prime (678553).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678547 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098 + ... + 1600.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2⁶⁷⁸⁵⁴⁷ is an apocalyptic number.

678547 is a deficient number, since it is larger than the sum of its proper divisors (47213).

678547 is a wasteful number, since it uses less digits than its factorization.

678547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593.

The product of its digits is 47040, while the sum is 37.

The square root of 678547 is about 823.7396433340. The cubic root of 678547 is about 87.8739155095.

It can be divided in two parts, 678 and 547, that added together give a triangular number (1225 = T₄₉).

The spelling of 678547 in words is "six hundred seventy-eight thousand, five hundred forty-seven".