678818144 has 24 divisors (see below), whose sum is σ = 1341371808. Its totient is φ = 338152320.

The previous prime is 678818141. The next prime is 678818201. The reversal of 678818144 is 441818876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678818141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30467 + ... + 47810.

It is an arithmetic number, because the mean of its divisors is an integer number (55890492).

Almost surely, 2^678818144 is an apocalyptic number.

It is an amenable number.

678818144 is a deficient number, since it is larger than the sum of its proper divisors (662553664).

678818144 is a wasteful number, since it uses less digits than its factorization.

678818144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78558 (or 78550 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 678818144 is about 26054.1387115368. The cubic root of 678818144 is about 878.8561861043.

The spelling of 678818144 in words is "six hundred seventy-eight million, eight hundred eighteen thousand, one hundred forty-four".