678133700 has 18 divisors (see below), whose sum is σ = 1471550346. Its totient is φ = 271253440.

The previous prime is 678133699. The next prime is 678133747. The reversal of 678133700 is 7331876.

It can be written as a sum of positive squares in 3 ways, for example, as 55830784 + 622302916 = 7472^2 + 24946^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3390569 + ... + 3390768.

It is an arithmetic number, because the mean of its divisors is an integer number (81752797).

Almost surely, 2^678133700 is an apocalyptic number.

It is an amenable number.

678133700 is an abundant number, since it is smaller than the sum of its proper divisors (793416646).

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

678133700 is a wasteful number, since it uses less digits than its factorization.

678133700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781351 (or 6781344 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 678133700 is about 26041.0003648093. Note that the first 3 decimals coincide. The cubic root of 678133700 is about 878.5607068054.

The spelling of 678133700 in words is "six hundred seventy-eight million, one hundred thirty-three thousand, seven hundred".