680195165 has 8 divisors (see below), whose sum is σ = 879021528. Its totient is φ = 502297920.

The previous prime is 680195107. The next prime is 680195171. The reversal of 680195165 is 561591086.

680195165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4507129 + 675688036 = 2123^2 + 25994^2 .

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

It is not a de Polignac number, because 680195165 - 2¹² = 680191069 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 5232206 + ... + 5232335.

It is an arithmetic number, because the mean of its divisors is an integer number (109877691).

Almost surely, 2^680195165 is an apocalyptic number.

680195165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

680195165 is a deficient number, since it is larger than the sum of its proper divisors (198826363).

680195165 is a wasteful number, since it uses less digits than its factorization.

680195165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10464559.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 680195165 is about 26080.5514703965. The cubic root of 680195165 is about 879.4500545475.

The spelling of 680195165 in words is "six hundred eighty million, one hundred ninety-five thousand, one hundred sixty-five".