678336336 has 80 divisors (see below), whose sum is σ = 1988563200. Its totient is φ = 221294592.

The previous prime is 678336331. The next prime is 678336377. The reversal of 678336336 is 633633876.

678336336 is a `hidden beast` number, since 6 + 7 + 8 + 3 + 3 + 633 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 678336291 and 678336300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678336331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3600 + ... + 37008.

It is an arithmetic number, because the mean of its divisors is an integer number (24857040).

Almost surely, 2^678336336 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 678336336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994281600).

678336336 is an abundant number, since it is smaller than the sum of its proper divisors (1310226864).

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

678336336 is a wasteful number, since it uses less digits than its factorization.

678336336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33473 (or 33461 counting only the distinct ones).

The product of its digits is 979776, while the sum is 45.

The square root of 678336336 is about 26044.8907849505. The cubic root of 678336336 is about 878.6482069045.

The spelling of 678336336 in words is "six hundred seventy-eight million, three hundred thirty-six thousand, three hundred thirty-six".