6782257 has 2 divisors, whose sum is σ = 6782258. Its totient is φ = 6782256.

The previous prime is 6782249. The next prime is 6782287. The reversal of 6782257 is 7522876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3400336 + 3381921 = 1844^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 6782257 - 2³ = 6782249 is a prime.

It is not a weakly prime, because it can be changed into another prime (6782287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3391128 + 3391129.

It is an arithmetic number, because the mean of its divisors is an integer number (3391129).

Almost surely, 2^6782257 is an apocalyptic number.

It is an amenable number.

6782257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6782257 is an equidigital number, since it uses as much as digits as its factorization.

6782257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 6782257 is about 2604.2766750098. The cubic root of 6782257 is about 189.2887256738.

The spelling of 6782257 in words is "six million, seven hundred eighty-two thousand, two hundred fifty-seven".