6641249 has 2 divisors, whose sum is σ = 6641250. Its totient is φ = 6641248.

The previous prime is 6641231. The next prime is 6641263. The reversal of 6641249 is 9421466.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4129024 + 2512225 = 2032^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 6641249 - 2⁸ = 6640993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6641149) 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, 3320624 + 3320625.

It is an arithmetic number, because the mean of its divisors is an integer number (3320625).

Almost surely, 2^6641249 is an apocalyptic number.

It is an amenable number.

6641249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6641249 is an equidigital number, since it uses as much as digits as its factorization.

6641249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 6641249 is about 2577.0620869510. The cubic root of 6641249 is about 187.9677117478.

The spelling of 6641249 in words is "six million, six hundred forty-one thousand, two hundred forty-nine".