679128768 has 84 divisors (see below), whose sum is σ = 1957108608. Its totient is φ = 225154560.

The previous prime is 679128743. The next prime is 679128781. The reversal of 679128768 is 867821976.

It is a super-2 number, since 2×679128768² = 922431767050395648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106930 + ... + 113102.

It is an arithmetic number, because the mean of its divisors is an integer number (23298912).

Almost surely, 2^679128768 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 679128768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978554304).

679128768 is an abundant number, since it is smaller than the sum of its proper divisors (1277979840).

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

679128768 is a wasteful number, since it uses less digits than its factorization.

679128768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382 (or 6369 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 679128768 is about 26060.0991556057. The cubic root of 679128768 is about 878.9902191521.

The spelling of 679128768 in words is "six hundred seventy-nine million, one hundred twenty-eight thousand, seven hundred sixty-eight".