6641473 has 2 divisors, whose sum is σ = 6641474. Its totient is φ = 6641472.

The previous prime is 6641449. The next prime is 6641477. The reversal of 6641473 is 3741466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6589489 + 51984 = 2567^2 + 228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6641473 is a prime.

It is not a weakly prime, because it can be changed into another prime (6641477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3320736 + 3320737.

It is an arithmetic number, because the mean of its divisors is an integer number (3320737).

Almost surely, 2^6641473 is an apocalyptic number.

It is an amenable number.

6641473 is a deficient number, since it is larger than the sum of its proper divisors (1).

6641473 is an equidigital number, since it uses as much as digits as its factorization.

6641473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 6641473 is about 2577.1055469266. The cubic root of 6641473 is about 187.9698250197.

The spelling of 6641473 in words is "six million, six hundred forty-one thousand, four hundred seventy-three".