680471 has 4 divisors (see below), whose sum is σ = 742344. Its totient is φ = 618600.

The previous prime is 680453. The next prime is 680489. The reversal of 680471 is 174086.

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

It is an interprime number because it is at equal distance from previous prime (680453) and next prime (680489).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680471 is a prime.

It is a super-3 number, since 3×680471³ = 945257471580381333, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680471.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680471.

It is not an unprimeable number, because it can be changed into a prime (680401) 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, 30920 + ... + 30941.

It is an arithmetic number, because the mean of its divisors is an integer number (185586).

2⁶⁸⁰⁴⁷¹ is an apocalyptic number.

680471 is a deficient number, since it is larger than the sum of its proper divisors (61873).

680471 is a wasteful number, since it uses less digits than its factorization.

680471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61872.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 680471 is about 824.9066613866. The cubic root of 680471 is about 87.9568917650.

The spelling of 680471 in words is "six hundred eighty thousand, four hundred seventy-one".