681120308 has 36 divisors (see below), whose sum is σ = 1323030912. Its totient is φ = 304284240.

The previous prime is 681120299. The next prime is 681120311. The reversal of 681120308 is 803021186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150941 + ... + 155387.

Almost surely, 2^681120308 is an apocalyptic number.

It is an amenable number.

681120308 is a deficient number, since it is larger than the sum of its proper divisors (641910604).

681120308 is a wasteful number, since it uses less digits than its factorization.

681120308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580 (or 4519 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 681120308 is about 26098.2817058901. The cubic root of 681120308 is about 879.8485913751.

The spelling of 681120308 in words is "six hundred eighty-one million, one hundred twenty thousand, three hundred eight".