680921312 has 24 divisors (see below), whose sum is σ = 1341522000. Its totient is φ = 340217344.

The previous prime is 680921287. The next prime is 680921321. The reversal of 680921312 is 213129086.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43064 + ... + 56712.

It is an arithmetic number, because the mean of its divisors is an integer number (55896750).

Almost surely, 2^680921312 is an apocalyptic number.

It is an amenable number.

680921312 is a deficient number, since it is larger than the sum of its proper divisors (660600688).

680921312 is a wasteful number, since it uses less digits than its factorization.

680921312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15218 (or 15210 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 680921312 is about 26094.4689924896. The cubic root of 680921312 is about 879.7628975546.

The spelling of 680921312 in words is "six hundred eighty million, nine hundred twenty-one thousand, three hundred twelve".