678836224 has 48 divisors (see below), whose sum is σ = 1480784760. Its totient is φ = 308551680.

The previous prime is 678836189. The next prime is 678836239. The reversal of 678836224 is 422638876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7462 + ... + 37594.

Almost surely, 2^678836224 is an apocalyptic number.

678836224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678836224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740392380).

678836224 is an abundant number, since it is smaller than the sum of its proper divisors (801948536).

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

678836224 is a wasteful number, since it uses less digits than its factorization.

678836224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30166 (or 30146 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The square root of 678836224 is about 26054.4856790534. The cubic root of 678836224 is about 878.8639886745.

The spelling of 678836224 in words is "six hundred seventy-eight million, eight hundred thirty-six thousand, two hundred twenty-four".