6398671 has 2 divisors, whose sum is σ = 6398672. Its totient is φ = 6398670.

The previous prime is 6398633. The next prime is 6398723. The reversal of 6398671 is 1768936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6398671 - 2⁷ = 6398543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6398621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199335 + 3199336.

It is an arithmetic number, because the mean of its divisors is an integer number (3199336).

Almost surely, 2^6398671 is an apocalyptic number.

6398671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6398671 is an equidigital number, since it uses as much as digits as its factorization.

6398671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 6398671 is about 2529.5594478090. The cubic root of 6398671 is about 185.6507010558.

The spelling of 6398671 in words is "six million, three hundred ninety-eight thousand, six hundred seventy-one".