678120546 has 16 divisors (see below), whose sum is σ = 1415208384. Its totient is φ = 216212304.

The previous prime is 678120539. The next prime is 678120577. The reversal of 678120546 is 645021876.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456821 + ... + 2457096.

It is an arithmetic number, because the mean of its divisors is an integer number (88450524).

Almost surely, 2^678120546 is an apocalyptic number.

678120546 is an abundant number, since it is smaller than the sum of its proper divisors (737087838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678120546 is a wasteful number, since it uses less digits than its factorization.

678120546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4913945.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 678120546 is about 26040.7478003225. The cubic root of 678120546 is about 878.5550261841. Note that the first 3 decimals are identical.

The spelling of 678120546 in words is "six hundred seventy-eight million, one hundred twenty thousand, five hundred forty-six".