6442247 has 8 divisors (see below), whose sum is σ = 7397376. Its totient is φ = 5495832.

The previous prime is 6442237. The next prime is 6442259. The reversal of 6442247 is 7422446.

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 6442247 - 2¹² = 6438151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503 + ... + 3624.

It is an arithmetic number, because the mean of its divisors is an integer number (924672).

Almost surely, 2^6442247 is an apocalyptic number.

6442247 is a deficient number, since it is larger than the sum of its proper divisors (955129).

6442247 is a wasteful number, since it uses less digits than its factorization.

6442247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357.

The product of its digits is 10752, while the sum is 29.

The square root of 6442247 is about 2538.1581904996. The cubic root of 6442247 is about 186.0711852244.

The spelling of 6442247 in words is "six million, four hundred forty-two thousand, two hundred forty-seven".