680955912 has 192 divisors, whose sum is σ = 2323601280. Its totient is φ = 175343616.

The previous prime is 680955901. The next prime is 680955949. The reversal of 680955912 is 219559086.

680955912 is a `hidden beast` number, since 6 + 80 + 9 + 559 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280528 + ... + 282944.

It is an arithmetic number, because the mean of its divisors is an integer number (12102090).

Almost surely, 2^680955912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680955912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161800640).

680955912 is an abundant number, since it is smaller than the sum of its proper divisors (1642645368).

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

680955912 is a wasteful number, since it uses less digits than its factorization.

680955912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2485 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 680955912 is about 26095.1319598120. The cubic root of 680955912 is about 879.7777985817. Note that the first 4 decimals are identical.

The spelling of 680955912 in words is "six hundred eighty million, nine hundred fifty-five thousand, nine hundred twelve".