6422247 has 48 divisors (see below), whose sum is σ = 11007360. Its totient is φ = 3709152.

The previous prime is 6422203. The next prime is 6422261. The reversal of 6422247 is 7422246.

It is a happy number.

It is not a de Polignac number, because 6422247 - 2⁶ = 6422183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 6 + 4² + 2¹¹ + 2¹⁷ + 2¹⁹ + 4² + 7⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 6422247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6422947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59968 + ... + 60074.

It is an arithmetic number, because the mean of its divisors is an integer number (229320).

Almost surely, 2^6422247 is an apocalyptic number.

6422247 is a deficient number, since it is larger than the sum of its proper divisors (4585113).

6422247 is a wasteful number, since it uses less digits than its factorization.

6422247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 142 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 6422247 is about 2534.2152631535. The cubic root of 6422247 is about 185.8784325289.

Subtracting 6422247 from its reverse (7422246), we obtain a palindrome (999999).

The spelling of 6422247 in words is "six million, four hundred twenty-two thousand, two hundred forty-seven".