6448861 has 2 divisors, whose sum is σ = 6448862. Its totient is φ = 6448860.

The previous prime is 6448853. The next prime is 6448889. The reversal of 6448861 is 1688446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 47961 = 2530^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 6448861 - 2³ = 6448853 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6448861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6448811) 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, 3224430 + 3224431.

It is an arithmetic number, because the mean of its divisors is an integer number (3224431).

Almost surely, 2^6448861 is an apocalyptic number.

It is an amenable number.

6448861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6448861 is an equidigital number, since it uses as much as digits as its factorization.

6448861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 6448861 is about 2539.4607695336. The cubic root of 6448861 is about 186.1348407521.

The spelling of 6448861 in words is "six million, four hundred forty-eight thousand, eight hundred sixty-one".