680205260386 has 4 divisors (see below), whose sum is σ = 1020307890582. Its totient is φ = 340102630192.

The previous prime is 680205260369. The next prime is 680205260393. The reversal of 680205260386 is 683062502086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 651515337225 + 28689923161 = 807165^2 + 169381^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170051315095 + ... + 170051315098.

Almost surely, 2^680205260386 is an apocalyptic number.

680205260386 is a deficient number, since it is larger than the sum of its proper divisors (340102630196).

680205260386 is a wasteful number, since it uses less digits than its factorization.

680205260386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340102630195.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 680205260386 in words is "six hundred eighty billion, two hundred five million, two hundred sixty thousand, three hundred eighty-six".