6466247 has 2 divisors, whose sum is σ = 6466248. Its totient is φ = 6466246.

The previous prime is 6466241. The next prime is 6466249. The reversal of 6466247 is 7426646.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6466247 - 2¹⁰ = 6465223 is a prime.

Together with 6466249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6466241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233123 + 3233124.

It is an arithmetic number, because the mean of its divisors is an integer number (3233124).

Almost surely, 2^6466247 is an apocalyptic number.

6466247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6466247 is an equidigital number, since it uses as much as digits as its factorization.

6466247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

The square root of 6466247 is about 2542.8816331084. The cubic root of 6466247 is about 186.3019625895.

The spelling of 6466247 in words is "six million, four hundred sixty-six thousand, two hundred forty-seven".