681487098 has 16 divisors (see below), whose sum is σ = 1434709920. Its totient is φ = 215206416.

The previous prime is 681487073. The next prime is 681487099. The reversal of 681487098 is 890784186.

It is a self number, because there is not a number n which added to its sum of digits gives 681487098.

It is not an unprimeable number, because it can be changed into a prime (681487099) 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 7 ways as a sum of consecutive naturals, for example, 2988865 + ... + 2989092.

It is an arithmetic number, because the mean of its divisors is an integer number (89669370).

Almost surely, 2^681487098 is an apocalyptic number.

681487098 is an abundant number, since it is smaller than the sum of its proper divisors (753222822).

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

681487098 is a wasteful number, since it uses less digits than its factorization.

681487098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977981.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 681487098 is about 26105.3078510865. The cubic root of 681487098 is about 880.0064987468.

The spelling of 681487098 in words is "six hundred eighty-one million, four hundred eighty-seven thousand, ninety-eight".