680400212 has 12 divisors (see below), whose sum is σ = 1190984256. Its totient is φ = 340119000.

The previous prime is 680400211. The next prime is 680400221. The reversal of 680400212 is 212004086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680400211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103 + ... + 36905.

It is an arithmetic number, because the mean of its divisors is an integer number (99248688).

Almost surely, 2^680400212 is an apocalyptic number.

It is an amenable number.

680400212 is a deficient number, since it is larger than the sum of its proper divisors (510584044).

680400212 is a wasteful number, since it uses less digits than its factorization.

680400212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40558 (or 40556 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 680400212 is about 26084.4822068601. The cubic root of 680400212 is about 879.5384166762.

Adding to 680400212 its reverse (212004086), we get a palindrome (892404298).

The spelling of 680400212 in words is "six hundred eighty million, four hundred thousand, two hundred twelve".