678319384 has 16 divisors (see below), whose sum is σ = 1274182200. Its totient is φ = 338537472.

The previous prime is 678319379. The next prime is 678319391. The reversal of 678319384 is 483913876.

It is a happy number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 73129 + ... + 81880.

Almost surely, 2^678319384 is an apocalyptic number.

It is an amenable number.

678319384 is a deficient number, since it is larger than the sum of its proper divisors (595862816).

678319384 is a wasteful number, since it uses less digits than its factorization.

678319384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155562 (or 155558 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 678319384 is about 26044.5653448085. The cubic root of 678319384 is about 878.6408875421.

The spelling of 678319384 in words is "six hundred seventy-eight million, three hundred nineteen thousand, three hundred eighty-four".