679971744 has 144 divisors (see below), whose sum is σ = 1984862880. Its totient is φ = 220746240.

The previous prime is 679971739. The next prime is 679971827. The reversal of 679971744 is 447179976.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2527642 + ... + 2527910.

It is an arithmetic number, because the mean of its divisors is an integer number (13783770).

Almost surely, 2^679971744 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 679971744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992431440).

679971744 is an abundant number, since it is smaller than the sum of its proper divisors (1304891136).

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

679971744 is a wasteful number, since it uses less digits than its factorization.

679971744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 472 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 679971744 is about 26076.2678311142. The cubic root of 679971744 is about 879.3537541826.

The spelling of 679971744 in words is "six hundred seventy-nine million, nine hundred seventy-one thousand, seven hundred forty-four".