6642347 has 2 divisors, whose sum is σ = 6642348. Its totient is φ = 6642346.

The previous prime is 6642341. The next prime is 6642353. The reversal of 6642347 is 7432466.

It is a balanced prime because it is at equal distance from previous prime (6642341) and next prime (6642353).

It is a cyclic number.

It is not a de Polignac number, because 6642347 - 2⁶ = 6642283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6642341) 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, 3321173 + 3321174.

It is an arithmetic number, because the mean of its divisors is an integer number (3321174).

Almost surely, 2^6642347 is an apocalyptic number.

6642347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642347 is an equidigital number, since it uses as much as digits as its factorization.

6642347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 32.

The square root of 6642347 is about 2577.2751114307. The cubic root of 6642347 is about 187.9780700993.

The spelling of 6642347 in words is "six million, six hundred forty-two thousand, three hundred forty-seven".