678338914 has 32 divisors (see below), whose sum is σ = 1128375360. Its totient is φ = 303268800.

The previous prime is 678338861. The next prime is 678338917. The reversal of 678338914 is 419833876.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (678338917) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 490504 + ... + 491884.

It is an arithmetic number, because the mean of its divisors is an integer number (35261730).

Almost surely, 2^678338914 is an apocalyptic number.

678338914 is a deficient number, since it is larger than the sum of its proper divisors (450036446).

678338914 is a wasteful number, since it uses less digits than its factorization.

678338914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746.

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

The square root of 678338914 is about 26044.9402763761. The cubic root of 678338914 is about 878.6493199965.

The spelling of 678338914 in words is "six hundred seventy-eight million, three hundred thirty-eight thousand, nine hundred fourteen".