678198032 has 40 divisors (see below), whose sum is σ = 1345431000. Its totient is φ = 331084800.

The previous prime is 678198019. The next prime is 678198047. The reversal of 678198032 is 230891876.

It can be written as a sum of positive squares in 4 ways, for example, as 99121936 + 579076096 = 9956^2 + 24064^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 115094 + ... + 120842.

It is an arithmetic number, because the mean of its divisors is an integer number (33635775).

Almost surely, 2^678198032 is an apocalyptic number.

It is an amenable number.

678198032 is a deficient number, since it is larger than the sum of its proper divisors (667232968).

678198032 is a wasteful number, since it uses less digits than its factorization.

678198032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5931 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 678198032 is about 26042.2355415199. The cubic root of 678198032 is about 878.5884878463.

The spelling of 678198032 in words is "six hundred seventy-eight million, one hundred ninety-eight thousand, thirty-two".