678422566 has 8 divisors (see below), whose sum is σ = 1018959480. Its totient is φ = 338769408.

The previous prime is 678422557. The next prime is 678422579. The reversal of 678422566 is 665224876.

678422566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219016 + ... + 222091.

It is an arithmetic number, because the mean of its divisors is an integer number (127369935).

Almost surely, 2^678422566 is an apocalyptic number.

678422566 is a deficient number, since it is larger than the sum of its proper divisors (340536914).

678422566 is a wasteful number, since it uses less digits than its factorization.

678422566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441878.

The product of its digits is 967680, while the sum is 46.

The square root of 678422566 is about 26046.5461433949. The cubic root of 678422566 is about 878.6854365307.

The spelling of 678422566 in words is "six hundred seventy-eight million, four hundred twenty-two thousand, five hundred sixty-six".