680916171 has 16 divisors (see below), whose sum is σ = 981935136. Its totient is φ = 417221376.

The previous prime is 680916169. The next prime is 680916193. The reversal of 680916171 is 171619086.

It is not a de Polignac number, because 680916171 - 2¹ = 680916169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (680916371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28380 + ... + 46553.

It is an arithmetic number, because the mean of its divisors is an integer number (61370946).

Almost surely, 2^680916171 is an apocalyptic number.

680916171 is a deficient number, since it is larger than the sum of its proper divisors (301018965).

680916171 is a wasteful number, since it uses less digits than its factorization.

680916171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75182.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 680916171 is about 26094.3704848383. The cubic root of 680916171 is about 879.7606834601.

The spelling of 680916171 in words is "six hundred eighty million, nine hundred sixteen thousand, one hundred seventy-one".