678948304 has 10 divisors (see below), whose sum is σ = 1315462370. Its totient is φ = 339474144.

The previous prime is 678948289. The next prime is 678948359. The reversal of 678948304 is 403849876.

It can be written as a sum of positive squares in only one way, i.e., 427662400 + 251285904 = 20680^2 + 15852^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 21217119 + ... + 21217150.

It is an arithmetic number, because the mean of its divisors is an integer number (131546237).

Almost surely, 2^678948304 is an apocalyptic number.

It is an amenable number.

678948304 is a deficient number, since it is larger than the sum of its proper divisors (636514066).

678948304 is a wasteful number, since it uses less digits than its factorization.

678948304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42434277 (or 42434271 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 678948304 is about 26056.6364675105. The cubic root of 678948304 is about 878.9123546140.

The spelling of 678948304 in words is "six hundred seventy-eight million, nine hundred forty-eight thousand, three hundred four".