678494038 has 16 divisors (see below), whose sum is σ = 1084752864. Its totient is φ = 317174400.

The previous prime is 678494029. The next prime is 678494051. The reversal of 678494038 is 830494876.

It is a junction number, because it is equal to n+sod(n) for n = 678493982 and 678494000.

It is a congruent number.

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, 60945 + ... + 71212.

It is an arithmetic number, because the mean of its divisors is an integer number (67797054).

Almost surely, 2^678494038 is an apocalyptic number.

678494038 is a deficient number, since it is larger than the sum of its proper divisors (406258826).

678494038 is a wasteful number, since it uses less digits than its factorization.

678494038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132327.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 678494038 is about 26047.9181125863. The cubic root of 678494038 is about 878.7162920296.

The spelling of 678494038 in words is "six hundred seventy-eight million, four hundred ninety-four thousand, thirty-eight".