6445441 has 2 divisors, whose sum is σ = 6445442. Its totient is φ = 6445440.

The previous prime is 6445433. The next prime is 6445447. The reversal of 6445441 is 1445446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6355441 + 90000 = 2521^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445441 - 2³ = 6445433 is a prime.

It is not a weakly prime, because it can be changed into another prime (6445447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222720 + 3222721.

It is an arithmetic number, because the mean of its divisors is an integer number (3222721).

Almost surely, 2^6445441 is an apocalyptic number.

It is an amenable number.

6445441 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445441 is an equidigital number, since it uses as much as digits as its factorization.

6445441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 6445441 is about 2538.7873089331. The cubic root of 6445441 is about 186.1019308723.

It can be divided in two parts, 6445 and 441, that added together give a palindrome (6886).

The spelling of 6445441 in words is "six million, four hundred forty-five thousand, four hundred forty-one".