678330044 has 24 divisors (see below), whose sum is σ = 1357762560. Its totient is φ = 290476656.

The previous prime is 678330041. The next prime is 678330049. The reversal of 678330044 is 440033876.

It is a junction number, because it is equal to n+sod(n) for n = 678329986 and 678330013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678330041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27749 + ... + 46115.

It is an arithmetic number, because the mean of its divisors is an integer number (56573440).

Almost surely, 2^678330044 is an apocalyptic number.

It is an amenable number.

678330044 is an abundant number, since it is smaller than the sum of its proper divisors (679432516).

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

678330044 is a wasteful number, since it uses less digits than its factorization.

678330044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19697 (or 19695 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 678330044 is about 26044.7699932251. The cubic root of 678330044 is about 878.6454902229.

The spelling of 678330044 in words is "six hundred seventy-eight million, three hundred thirty thousand, forty-four".