6665047 has 2 divisors, whose sum is σ = 6665048. Its totient is φ = 6665046.

The previous prime is 6665017. The next prime is 6665051. The reversal of 6665047 is 7405666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6665047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6665017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332523 + 3332524.

It is an arithmetic number, because the mean of its divisors is an integer number (3332524).

Almost surely, 2^6665047 is an apocalyptic number.

6665047 is a deficient number, since it is larger than the sum of its proper divisors (1).

6665047 is an equidigital number, since it uses as much as digits as its factorization.

6665047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 6665047 is about 2581.6752313178. The cubic root of 6665047 is about 188.1919628948.

The spelling of 6665047 in words is "six million, six hundred sixty-five thousand, forty-seven".