679837572820 has 384 divisors, whose sum is σ = 1850513817600. Its totient is φ = 208582133760.

The previous prime is 679837572809. The next prime is 679837572899. The reversal of 679837572820 is 28275738976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 512310997 + ... + 512312323.

It is an arithmetic number, because the mean of its divisors is an integer number (4819046400).

Almost surely, 2^679837572820 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 679837572820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925256908800).

679837572820 is an abundant number, since it is smaller than the sum of its proper divisors (1170676244780).

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

679837572820 is a wasteful number, since it uses less digits than its factorization.

679837572820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 679837572820 in words is "six hundred seventy-nine billion, eight hundred thirty-seven million, five hundred seventy-two thousand, eight hundred twenty".