678024 has 64 divisors (see below), whose sum is σ = 1953600. Its totient is φ = 217728.

The previous prime is 678023. The next prime is 678037. The reversal of 678024 is 420876.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (678023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9252 + ... + 9324.

It is an arithmetic number, because the mean of its divisors is an integer number (30525).

2⁶⁷⁸⁰²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976800).

678024 is an abundant number, since it is smaller than the sum of its proper divisors (1275576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678024 is a wasteful number, since it uses less digits than its factorization.

678024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 678024 is about 823.4221274656. The cubic root of 678024 is about 87.8513330058.

The spelling of 678024 in words is "six hundred seventy-eight thousand, twenty-four".