678314112 has 128 divisors (see below), whose sum is σ = 2076426240. Its totient is φ = 192181248.

The previous prime is 678314107. The next prime is 678314141. The reversal of 678314112 is 211413876.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×678314112² = 920220069076697088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 340383 + ... + 342369.

It is an arithmetic number, because the mean of its divisors is an integer number (16222080).

Almost surely, 2^678314112 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 678314112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038213120).

678314112 is an abundant number, since it is smaller than the sum of its proper divisors (1398112128).

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

678314112 is a wasteful number, since it uses less digits than its factorization.

678314112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 2126 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 678314112 is about 26044.4641334776. The cubic root of 678314112 is about 878.6386112266.

Adding to 678314112 its reverse (211413876), we get a palindrome (889727988).

The spelling of 678314112 in words is "six hundred seventy-eight million, three hundred fourteen thousand, one hundred twelve".