678886550 has 12 divisors (see below), whose sum is σ = 1262729076. Its totient is φ = 271554600.

The previous prime is 678886541. The next prime is 678886583. The reversal of 678886550 is 55688876.

It is a junction number, because it is equal to n+sod(n) for n = 678886492 and 678886501.

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 in 5 ways as a sum of consecutive naturals, for example, 6788816 + ... + 6788915.

It is an arithmetic number, because the mean of its divisors is an integer number (105227423).

Almost surely, 2^678886550 is an apocalyptic number.

678886550 is a deficient number, since it is larger than the sum of its proper divisors (583842526).

678886550 is a wasteful number, since it uses less digits than its factorization.

678886550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13577743 (or 13577738 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 53.

The square root of 678886550 is about 26055.4514449472. The cubic root of 678886550 is about 878.8857065374.

The spelling of 678886550 in words is "six hundred seventy-eight million, eight hundred eighty-six thousand, five hundred fifty".