681488458 has 16 divisors (see below), whose sum is σ = 1208551680. Its totient is φ = 281995056.

The previous prime is 681488453. The next prime is 681488491. The reversal of 681488458 is 854884186.

It is not an unprimeable number, because it can be changed into a prime (681488453) 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, 838866 + ... + 839677.

It is an arithmetic number, because the mean of its divisors is an integer number (75534480).

Almost surely, 2^681488458 is an apocalyptic number.

681488458 is a deficient number, since it is larger than the sum of its proper divisors (527063222).

681488458 is a wasteful number, since it uses less digits than its factorization.

681488458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678581.

The product of its digits is 1966080, while the sum is 52.

The square root of 681488458 is about 26105.3338994160. Note that the first 3 decimals coincide. The cubic root of 681488458 is about 880.0070841372.

The spelling of 681488458 in words is "six hundred eighty-one million, four hundred eighty-eight thousand, four hundred fifty-eight".