678711378 has 8 divisors (see below), whose sum is σ = 1357422768. Its totient is φ = 226237124.

The previous prime is 678711377. The next prime is 678711403. The reversal of 678711378 is 873117876.

It is a sphenic number, since it is the product of 3 distinct primes.

678711378 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (678711373) 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 3 ways as a sum of consecutive naturals, for example, 56559276 + ... + 56559287.

It is an arithmetic number, because the mean of its divisors is an integer number (169677846).

Almost surely, 2^678711378 is an apocalyptic number.

678711378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

678711378 is a wasteful number, since it uses less digits than its factorization.

678711378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113118568.

The product of its digits is 395136, while the sum is 48.

The square root of 678711378 is about 26052.0897050505. The cubic root of 678711378 is about 878.8101075484.

The spelling of 678711378 in words is "six hundred seventy-eight million, seven hundred eleven thousand, three hundred seventy-eight".