679670868240 has 1280 divisors, whose sum is σ = 3059004211200. Its totient is φ = 134691766272.

The previous prime is 679670868229. The next prime is 679670868269. The reversal of 679670868240 is 42868076976.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 474298564 + ... + 474299996.

It is an arithmetic number, because the mean of its divisors is an integer number (2389847040).

Almost surely, 2^679670868240 is an apocalyptic number.

679670868240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679670868240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529502105600).

679670868240 is an abundant number, since it is smaller than the sum of its proper divisors (2379333342960).

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

679670868240 is a wasteful number, since it uses less digits than its factorization.

679670868240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 679670868240 in words is "six hundred seventy-nine billion, six hundred seventy million, eight hundred sixty-eight thousand, two hundred forty".