680011212 has 12 divisors (see below), whose sum is σ = 1586692856. Its totient is φ = 226670400.

The previous prime is 680011187. The next prime is 680011217. The reversal of 680011212 is 212110086.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (680011217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28333789 + ... + 28333812.

Almost surely, 2^680011212 is an apocalyptic number.

It is an amenable number.

680011212 is an abundant number, since it is smaller than the sum of its proper divisors (906681644).

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

680011212 is a wasteful number, since it uses less digits than its factorization.

680011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56667608 (or 56667606 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 680011212 is about 26077.0246002108. The cubic root of 680011212 is about 879.3707674692.

Adding to 680011212 its reverse (212110086), we get a palindrome (892121298).

The spelling of 680011212 in words is "six hundred eighty million, eleven thousand, two hundred twelve".