678517933284 has 243 divisors, whose sum is σ = 1846453981827. Its totient is φ = 210068879328.

The previous prime is 678517933273. The next prime is 678517933309. The reversal of 678517933284 is 482339715876.

The square root of 678517933284 is 823722.

It is a perfect power (a square), and thus also a powerful number.

678517933284 is a `hidden beast` number, since 6 + 7 + 8 + 517 + 9 + 3 + 32 + 84 = 666.

678517933284 is digitally balanced in base 2 and base 4, because in such bases 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 80 ways as a sum of consecutive naturals, for example, 5342660829 + ... + 5342660955.

Almost surely, 2^678517933284 is an apocalyptic number.

678517933284 is the 823722-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678517933284

678517933284 is an abundant number, since it is smaller than the sum of its proper divisors (1167936048543).

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

678517933284 is a wasteful number, since it uses less digits than its factorization.

678517933284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 202 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The spelling of 678517933284 in words is "six hundred seventy-eight billion, five hundred seventeen million, nine hundred thirty-three thousand, two hundred eighty-four".