680215290 has 32 divisors (see below), whose sum is σ = 1634592960. Its totient is φ = 181160064.

The previous prime is 680215267. The next prime is 680215301. The reversal of 680215290 is 92512086.

It is a Curzon number.

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, 10257 + ... + 38283.

It is an arithmetic number, because the mean of its divisors is an integer number (51081030).

Almost surely, 2^680215290 is an apocalyptic number.

680215290 is an abundant number, since it is smaller than the sum of its proper divisors (954377670).

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

680215290 is a wasteful number, since it uses less digits than its factorization.

680215290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28846.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 680215290 is about 26080.9372914395. The cubic root of 680215290 is about 879.4587279198.

The spelling of 680215290 in words is "six hundred eighty million, two hundred fifteen thousand, two hundred ninety".