678455504 has 10 divisors (see below), whose sum is σ = 1314507570. Its totient is φ = 339227744.

The previous prime is 678455501. The next prime is 678455543. The reversal of 678455504 is 405554876.

It can be written as a sum of positive squares in only one way, i.e., 658025104 + 20430400 = 25652^2 + 4520^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678455501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201719 + ... + 21201750.

It is an arithmetic number, because the mean of its divisors is an integer number (131450757).

Almost surely, 2^678455504 is an apocalyptic number.

It is an amenable number.

678455504 is a deficient number, since it is larger than the sum of its proper divisors (636052066).

678455504 is a wasteful number, since it uses less digits than its factorization.

678455504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42403477 (or 42403471 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 44.

The square root of 678455504 is about 26047.1784268469. The cubic root of 678455504 is about 878.6996566122.

The spelling of 678455504 in words is "six hundred seventy-eight million, four hundred fifty-five thousand, five hundred four".