680487778835 has 8 divisors (see below), whose sum is σ = 827771435520. Its totient is φ = 536932822464.

The previous prime is 680487778781. The next prime is 680487778903. The reversal of 680487778835 is 538877784086.

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

It is a cyclic number.

It is not a de Polignac number, because 680487778835 - 2¹⁰ = 680487777811 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932174675 + ... + 932175404.

It is an arithmetic number, because the mean of its divisors is an integer number (103471429440).

Almost surely, 2^680487778835 is an apocalyptic number.

680487778835 is a deficient number, since it is larger than the sum of its proper divisors (147283656685).

680487778835 is a wasteful number, since it uses less digits than its factorization.

680487778835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864350157.

The product of its (nonzero) digits is 505774080, while the sum is 71.

The spelling of 680487778835 in words is "six hundred eighty billion, four hundred eighty-seven million, seven hundred seventy-eight thousand, eight hundred thirty-five".