671471 has 2 divisors, whose sum is σ = 671472. Its totient is φ = 671470.

The previous prime is 671467. The next prime is 671477. The reversal of 671471 is 174176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671471 - 2² = 671467 is a prime.

It is a super-3 number, since 3×671471³ = 908245044610260333, which contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335735 + 335736.

It is an arithmetic number, because the mean of its divisors is an integer number (335736).

2⁶⁷¹⁴⁷¹ is an apocalyptic number.

671471 is a deficient number, since it is larger than the sum of its proper divisors (1).

671471 is an equidigital number, since it uses as much as digits as its factorization.

671471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 26.

The square root of 671471 is about 819.4333407911. The cubic root of 671471 is about 87.5673929782.

The spelling of 671471 in words is "six hundred seventy-one thousand, four hundred seventy-one".