679936128 has 128 divisors (see below), whose sum is σ = 1948363200. Its totient is φ = 209387520.

The previous prime is 679936121. The next prime is 679936151. The reversal of 679936128 is 821639976.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (679936121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298000 + ... + 300272.

Almost surely, 2^679936128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679936128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974181600).

679936128 is an abundant number, since it is smaller than the sum of its proper divisors (1268427072).

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

679936128 is a wasteful number, since it uses less digits than its factorization.

679936128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350 (or 2338 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 679936128 is about 26075.5849023565. The cubic root of 679936128 is about 879.3384007946.

The spelling of 679936128 in words is "six hundred seventy-nine million, nine hundred thirty-six thousand, one hundred twenty-eight".