681764457230 has 8 divisors (see below), whose sum is σ = 1227176023032. Its totient is φ = 272705782888.

The previous prime is 681764457193. The next prime is 681764457299. The reversal of 681764457230 is 32754467186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34088222852 + ... + 34088222871.

It is an arithmetic number, because the mean of its divisors is an integer number (153397002879).

Almost surely, 2^681764457230 is an apocalyptic number.

681764457230 is a deficient number, since it is larger than the sum of its proper divisors (545411565802).

681764457230 is a wasteful number, since it uses less digits than its factorization.

681764457230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68176445730.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 681764457230 in words is "six hundred eighty-one billion, seven hundred sixty-four million, four hundred fifty-seven thousand, two hundred thirty".