679874331840 has 224 divisors, whose sum is σ = 2394752152320. Its totient is φ = 162024345600.

The previous prime is 679874331797. The next prime is 679874331841. The reversal of 679874331840 is 48133478976.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (679874331841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77430 + ... + 1168650.

Almost surely, 2^679874331840 is an apocalyptic number.

679874331840 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 679874331840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197376076160).

679874331840 is an abundant number, since it is smaller than the sum of its proper divisors (1714877820480).

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

679874331840 is a wasteful number, since it uses less digits than its factorization.

679874331840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091311 (or 1091301 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 679874331840 in words is "six hundred seventy-nine billion, eight hundred seventy-four million, three hundred thirty-one thousand, eight hundred forty".