6441247 has 8 divisors (see below), whose sum is σ = 6821360. Its totient is φ = 6065280.

The previous prime is 6441241. The next prime is 6441257. The reversal of 6441247 is 7421446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6441247 - 2⁷ = 6441119 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2503 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (852670).

Almost surely, 2^6441247 is an apocalyptic number.

6441247 is a deficient number, since it is larger than the sum of its proper divisors (380113).

6441247 is a wasteful number, since it uses less digits than its factorization.

6441247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its digits is 5376, while the sum is 28.

The square root of 6441247 is about 2537.9611896166. The cubic root of 6441247 is about 186.0615570716.

It can be divided in two parts, 644 and 1247, that added together give a triangular number (1891 = T₆₁).

The spelling of 6441247 in words is "six million, four hundred forty-one thousand, two hundred forty-seven".