681830235 has 12 divisors (see below), whose sum is σ = 1181839152. Its totient is φ = 363642768.

The previous prime is 681830189. The next prime is 681830249. The reversal of 681830235 is 532038186.

It is not a de Polignac number, because 681830235 - 2⁹ = 681829723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 681830235.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7575847 + ... + 7575936.

It is an arithmetic number, because the mean of its divisors is an integer number (98486596).

Almost surely, 2^681830235 is an apocalyptic number.

681830235 is a deficient number, since it is larger than the sum of its proper divisors (500008917).

681830235 is a wasteful number, since it uses less digits than its factorization.

681830235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151794 (or 15151791 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 681830235 is about 26111.8791931948. The cubic root of 681830235 is about 880.1541719379.

The spelling of 681830235 in words is "six hundred eighty-one million, eight hundred thirty thousand, two hundred thirty-five".