679817616 has 80 divisors (see below), whose sum is σ = 1822740480. Its totient is φ = 218171520.

The previous prime is 679817563. The next prime is 679817627. The reversal of 679817616 is 616718976.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144225 + ... + 148863.

It is an arithmetic number, because the mean of its divisors is an integer number (22784256).

Almost surely, 2^679817616 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 679817616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911370240).

679817616 is an abundant number, since it is smaller than the sum of its proper divisors (1142922864).

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

679817616 is a wasteful number, since it uses less digits than its factorization.

679817616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764 (or 4758 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 679817616 is about 26073.3123327283. The cubic root of 679817616 is about 879.2873086387.

The spelling of 679817616 in words is "six hundred seventy-nine million, eight hundred seventeen thousand, six hundred sixteen".