6417947 has 2 divisors, whose sum is σ = 6417948. Its totient is φ = 6417946.

The previous prime is 6417937. The next prime is 6418031. The reversal of 6417947 is 7497146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6417947 - 2¹⁰ = 6416923 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6417947.

It is not a weakly prime, because it can be changed into another prime (6417937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3208973 + 3208974.

It is an arithmetic number, because the mean of its divisors is an integer number (3208974).

Almost surely, 2^6417947 is an apocalyptic number.

6417947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6417947 is an equidigital number, since it uses as much as digits as its factorization.

6417947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 6417947 is about 2533.3667322360. The cubic root of 6417947 is about 185.8369384479.

The spelling of 6417947 in words is "six million, four hundred seventeen thousand, nine hundred forty-seven".