678810224 has 80 divisors (see below), whose sum is σ = 1429432320. Its totient is φ = 311351040.

The previous prime is 678810217. The next prime is 678810241. The reversal of 678810224 is 422018876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790867 + ... + 1791245.

It is an arithmetic number, because the mean of its divisors is an integer number (17867904).

Almost surely, 2^678810224 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 678810224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714716160).

678810224 is an abundant number, since it is smaller than the sum of its proper divisors (750622096).

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

678810224 is a wasteful number, since it uses less digits than its factorization.

678810224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 678810224 is about 26053.9867198861. The cubic root of 678810224 is about 878.8527681206.

The spelling of 678810224 in words is "six hundred seventy-eight million, eight hundred ten thousand, two hundred twenty-four".