680881086 has 32 divisors (see below), whose sum is σ = 1561881600. Its totient is φ = 219638520.

The previous prime is 680881081. The next prime is 680881177. The reversal of 680881086 is 680188086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680881081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201696 + ... + 205043.

It is an arithmetic number, because the mean of its divisors is an integer number (48808800).

Almost surely, 2^680881086 is an apocalyptic number.

680881086 is an abundant number, since it is smaller than the sum of its proper divisors (881000514).

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

680881086 is a wasteful number, since it uses less digits than its factorization.

680881086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406781 (or 406775 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 680881086 is about 26093.6982047390. The cubic root of 680881086 is about 879.7455729688.

The spelling of 680881086 in words is "six hundred eighty million, eight hundred eighty-one thousand, eighty-six".