6866449 has 2 divisors, whose sum is σ = 6866450. Its totient is φ = 6866448.

The previous prime is 6866437. The next prime is 6866459. The reversal of 6866449 is 9446686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6838225 + 28224 = 2615^2 + 168^2 .

It is a cyclic number.

It is not a de Polignac number, because 6866449 - 2¹⁵ = 6833681 is a prime.

It is not a weakly prime, because it can be changed into another prime (6866459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3433224 + 3433225.

It is an arithmetic number, because the mean of its divisors is an integer number (3433225).

Almost surely, 2^6866449 is an apocalyptic number.

It is an amenable number.

6866449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6866449 is an equidigital number, since it uses as much as digits as its factorization.

6866449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 6866449 is about 2620.3910013584. The cubic root of 6866449 is about 190.0687562792.

The spelling of 6866449 in words is "six million, eight hundred sixty-six thousand, four hundred forty-nine".