6682561 has 2 divisors, whose sum is σ = 6682562. Its totient is φ = 6682560.

The previous prime is 6682483. The next prime is 6682573. The reversal of 6682561 is 1652866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 2742336 = 1985^2 + 1656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6682561 is a prime.

It is not a weakly prime, because it can be changed into another prime (6682861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3341280 + 3341281.

It is an arithmetic number, because the mean of its divisors is an integer number (3341281).

Almost surely, 2^6682561 is an apocalyptic number.

It is an amenable number.

6682561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6682561 is an equidigital number, since it uses as much as digits as its factorization.

6682561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 6682561 is about 2585.0649895119. The cubic root of 6682561 is about 188.3566584697.

The spelling of 6682561 in words is "six million, six hundred eighty-two thousand, five hundred sixty-one".