679256128 has 56 divisors (see below), whose sum is σ = 1400129280. Its totient is φ = 326607360.

The previous prime is 679256119. The next prime is 679256129. The reversal of 679256128 is 821652976.

It is a super-2 number, since 2×679256128² = 922777774851104768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679256129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342243 + ... + 344221.

Almost surely, 2^679256128 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 679256128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700064640).

679256128 is an abundant number, since it is smaller than the sum of its proper divisors (720873152).

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

679256128 is a wasteful number, since it uses less digits than its factorization.

679256128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195 (or 2185 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 679256128 is about 26062.5426234663. The cubic root of 679256128 is about 879.0451626828.

The spelling of 679256128 in words is "six hundred seventy-nine million, two hundred fifty-six thousand, one hundred twenty-eight".