680386195 has 4 divisors (see below), whose sum is σ = 816463440. Its totient is φ = 544308952.

The previous prime is 680386193. The next prime is 680386243. The reversal of 680386195 is 591683086.

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

It is a cyclic number.

It is not a de Polignac number, because 680386195 - 2¹ = 680386193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680386193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68038615 + ... + 68038624.

It is an arithmetic number, because the mean of its divisors is an integer number (204115860).

Almost surely, 2^680386195 is an apocalyptic number.

680386195 is a deficient number, since it is larger than the sum of its proper divisors (136077245).

680386195 is a wasteful number, since it uses less digits than its factorization.

680386195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136077244.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 680386195 is about 26084.2135208252. The cubic root of 680386195 is about 879.5323768120.

The spelling of 680386195 in words is "six hundred eighty million, three hundred eighty-six thousand, one hundred ninety-five".