678178368 has 336 divisors, whose sum is σ = 2373636096. Its totient is φ = 180956160.

The previous prime is 678178367. The next prime is 678178393. The reversal of 678178368 is 863871876.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is not an unprimeable number, because it can be changed into a prime (678178363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6584205 + ... + 6584307.

Almost surely, 2^678178368 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 678178368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1186818048).

678178368 is an abundant number, since it is smaller than the sum of its proper divisors (1695457728).

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

678178368 is a wasteful number, since it uses less digits than its factorization.

678178368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 209 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 678178368 is about 26041.8579982305. The cubic root of 678178368 is about 878.5799963585.

The spelling of 678178368 in words is "six hundred seventy-eight million, one hundred seventy-eight thousand, three hundred sixty-eight".