680999712 has 48 divisors (see below), whose sum is σ = 1817938080. Its totient is φ = 223150592.

The previous prime is 680999687. The next prime is 680999717. The reversal of 680999712 is 217999086.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (680999717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54453 + ... + 65780.

It is an arithmetic number, because the mean of its divisors is an integer number (37873710).

Almost surely, 2^680999712 is an apocalyptic number.

It is an amenable number.

680999712 is an abundant number, since it is smaller than the sum of its proper divisors (1136938368).

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

680999712 is a wasteful number, since it uses less digits than its factorization.

680999712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120305 (or 120297 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 680999712 is about 26095.9711833072. The cubic root of 680999712 is about 879.7966610077.

The spelling of 680999712 in words is "six hundred eighty million, nine hundred ninety-nine thousand, seven hundred twelve".