678280356 has 72 divisors (see below), whose sum is σ = 1855963200. Its totient is φ = 207624384.

The previous prime is 678280277. The next prime is 678280381. The reversal of 678280356 is 653082876.

678280356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89491 + ... + 96773.

Almost surely, 2^678280356 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 678280356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927981600).

678280356 is an abundant number, since it is smaller than the sum of its proper divisors (1177682844).

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

678280356 is a wasteful number, since it uses less digits than its factorization.

678280356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7505 (or 7500 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 678280356 is about 26043.8160798298. The cubic root of 678280356 is about 878.6240359649.

The spelling of 678280356 in words is "six hundred seventy-eight million, two hundred eighty thousand, three hundred fifty-six".