678704832 has 224 divisors, whose sum is σ = 2181108160. Its totient is φ = 208272384.

The previous prime is 678704827. The next prime is 678704869. The reversal of 678704832 is 238407876.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1819398 + ... + 1819770.

It is an arithmetic number, because the mean of its divisors is an integer number (9737090).

Almost surely, 2^678704832 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 678704832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090554080).

678704832 is an abundant number, since it is smaller than the sum of its proper divisors (1502403328).

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

678704832 is an equidigital number, since it uses as much as digits as its factorization.

678704832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 678704832 is about 26051.9640718315. The cubic root of 678704832 is about 878.8072822387.

The spelling of 678704832 in words is "six hundred seventy-eight million, seven hundred four thousand, eight hundred thirty-two".