678804850 has 24 divisors (see below), whose sum is σ = 1263516228. Its totient is φ = 271320000.

The previous prime is 678804839. The next prime is 678804857. The reversal of 678804850 is 58408876.

It can be written as a sum of positive squares in 6 ways, for example, as 37246609 + 641558241 = 6103^2 + 25329^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 678804850.

It is not an unprimeable number, because it can be changed into a prime (678804857) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 75600 + ... + 84100.

Almost surely, 2^678804850 is an apocalyptic number.

678804850 is a deficient number, since it is larger than the sum of its proper divisors (584711378).

678804850 is a wasteful number, since it uses less digits than its factorization.

678804850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110 (or 10105 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 678804850 is about 26053.8835876727. The cubic root of 678804850 is about 878.8504488827.

The spelling of 678804850 in words is "six hundred seventy-eight million, eight hundred four thousand, eight hundred fifty".