680278171 has 8 divisors (see below), whose sum is σ = 723287664. Its totient is φ = 637601280.

The previous prime is 680278139. The next prime is 680278177. The reversal of 680278171 is 171872086.

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 680278171 - 2⁵ = 680278139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680278177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78925 + ... + 87118.

It is an arithmetic number, because the mean of its divisors is an integer number (90410958).

Almost surely, 2^680278171 is an apocalyptic number.

680278171 is a deficient number, since it is larger than the sum of its proper divisors (43009493).

680278171 is a wasteful number, since it uses less digits than its factorization.

680278171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166301.

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 680278171 is about 26082.1427609006. The cubic root of 680278171 is about 879.4858269580.

The spelling of 680278171 in words is "six hundred eighty million, two hundred seventy-eight thousand, one hundred seventy-one".