680535577578 has 64 divisors (see below), whose sum is σ = 1395633162240. Its totient is φ = 221125335552.

The previous prime is 680535577517. The next prime is 680535577597. The reversal of 680535577578 is 875775535086.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94266453 + ... + 94273671.

It is an arithmetic number, because the mean of its divisors is an integer number (21806768160).

Almost surely, 2^680535577578 is an apocalyptic number.

680535577578 is an abundant number, since it is smaller than the sum of its proper divisors (715097584662).

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

680535577578 is a wasteful number, since it uses less digits than its factorization.

680535577578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571.

The product of its (nonzero) digits is 246960000, while the sum is 66.

The spelling of 680535577578 in words is "six hundred eighty billion, five hundred thirty-five million, five hundred seventy-seven thousand, five hundred seventy-eight".