678451018 has 32 divisors (see below), whose sum is σ = 1204015104. Its totient is φ = 280651392.

The previous prime is 678451013. The next prime is 678451021. The reversal of 678451018 is 810154876.

It is not an unprimeable number, because it can be changed into a prime (678451013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60630 + ... + 70942.

It is an arithmetic number, because the mean of its divisors is an integer number (37625472).

Almost surely, 2^678451018 is an apocalyptic number.

678451018 is a deficient number, since it is larger than the sum of its proper divisors (525564086).

678451018 is a wasteful number, since it uses less digits than its factorization.

678451018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10486.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 678451018 is about 26047.0923137305. The cubic root of 678451018 is about 878.6977199313.

The spelling of 678451018 in words is "six hundred seventy-eight million, four hundred fifty-one thousand, eighteen".