678411944 has 32 divisors (see below), whose sum is σ = 1464367680. Its totient is φ = 288622464.

The previous prime is 678411931. The next prime is 678412001. The reversal of 678411944 is 449114876.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 678411895 and 678411904.

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 7 ways as a sum of consecutive naturals, for example, 36542 + ... + 51885.

It is an arithmetic number, because the mean of its divisors is an integer number (45761490).

Almost surely, 2^678411944 is an apocalyptic number.

It is an amenable number.

678411944 is an abundant number, since it is smaller than the sum of its proper divisors (785955736).

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

678411944 is a wasteful number, since it uses less digits than its factorization.

678411944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88577 (or 88573 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 678411944 is about 26046.3422384027. The cubic root of 678411944 is about 878.6808506743.

The spelling of 678411944 in words is "six hundred seventy-eight million, four hundred eleven thousand, nine hundred forty-four".