671743 has 2 divisors, whose sum is σ = 671744. Its totient is φ = 671742.

The previous prime is 671729. The next prime is 671753. The reversal of 671743 is 347176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335871 + 335872.

It is an arithmetic number, because the mean of its divisors is an integer number (335872).

2⁶⁷¹⁷⁴³ is an apocalyptic number.

671743 is a deficient number, since it is larger than the sum of its proper divisors (1).

671743 is an equidigital number, since it uses as much as digits as its factorization.

671743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 671743 is about 819.5992923374. The cubic root of 671743 is about 87.5792153381.

The spelling of 671743 in words is "six hundred seventy-one thousand, seven hundred forty-three".