6261682649 has 2 divisors, whose sum is σ = 6261682650. Its totient is φ = 6261682648.

The previous prime is 6261682589. The next prime is 6261682657. The reversal of 6261682649 is 9462861626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6259974400 + 1708249 = 79120^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 6261682649 - 2⁸ = 6261682393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6261682597 and 6261682606.

It is not a weakly prime, because it can be changed into another prime (6261682249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3130841324 + 3130841325.

It is an arithmetic number, because the mean of its divisors is an integer number (3130841325).

Almost surely, 2^6261682649 is an apocalyptic number.

It is an amenable number.

6261682649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6261682649 is an equidigital number, since it uses as much as digits as its factorization.

6261682649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 50.

The square root of 6261682649 is about 79130.7945682337. The cubic root of 6261682649 is about 1843.1627482017.

The spelling of 6261682649 in words is "six billion, two hundred sixty-one million, six hundred eighty-two thousand, six hundred forty-nine".