678423424 has 96 divisors (see below), whose sum is σ = 1655245800. Its totient is φ = 275401728.

The previous prime is 678423413. The next prime is 678423451. The reversal of 678423424 is 424324876.

678423424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116322 + ... + 122014.

Almost surely, 2^678423424 is an apocalyptic number.

678423424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678423424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827622900).

678423424 is an abundant number, since it is smaller than the sum of its proper divisors (976822376).

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

678423424 is a wasteful number, since it uses less digits than its factorization.

678423424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740 (or 5721 counting only the distinct ones).

The product of its digits is 258048, while the sum is 40.

The square root of 678423424 is about 26046.5626139036. The cubic root of 678423424 is about 878.6858069546.

The spelling of 678423424 in words is "six hundred seventy-eight million, four hundred twenty-three thousand, four hundred twenty-four".