680505216 has 96 divisors (see below), whose sum is σ = 1908124200. Its totient is φ = 214852608.

The previous prime is 680505181. The next prime is 680505227. The reversal of 680505216 is 612505086.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136170 + ... + 141078.

Almost surely, 2^680505216 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 680505216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954062100).

680505216 is an abundant number, since it is smaller than the sum of its proper divisors (1227618984).

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

680505216 is a wasteful number, since it uses less digits than its factorization.

680505216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964 (or 4933 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 680505216 is about 26086.4948967852. The cubic root of 680505216 is about 879.5836598041.

The spelling of 680505216 in words is "six hundred eighty million, five hundred five thousand, two hundred sixteen".