6444871 has 2 divisors, whose sum is σ = 6444872. Its totient is φ = 6444870.

The previous prime is 6444863. The next prime is 6444937. The reversal of 6444871 is 1784446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6444871 - 2³ = 6444863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6444271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222435 + 3222436.

It is an arithmetic number, because the mean of its divisors is an integer number (3222436).

Almost surely, 2^6444871 is an apocalyptic number.

6444871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444871 is an equidigital number, since it uses as much as digits as its factorization.

6444871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 6444871 is about 2538.6750481304. The cubic root of 6444871 is about 186.0964447606.

The spelling of 6444871 in words is "six million, four hundred forty-four thousand, eight hundred seventy-one".