6802782661 has 2 divisors, whose sum is σ = 6802782662. Its totient is φ = 6802782660.

The previous prime is 6802782643. The next prime is 6802782697. The reversal of 6802782661 is 1662872086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6023312100 + 779470561 = 77610^2 + 27919^2 .

It is a cyclic number.

It is not a de Polignac number, because 6802782661 - 2¹⁵ = 6802749893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6802782601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3401391330 + 3401391331.

It is an arithmetic number, because the mean of its divisors is an integer number (3401391331).

Almost surely, 2^6802782661 is an apocalyptic number.

It is an amenable number.

6802782661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6802782661 is an equidigital number, since it uses as much as digits as its factorization.

6802782661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 6802782661 is about 82478.9831472236. The cubic root of 6802782661 is about 1894.7948632844.

The spelling of 6802782661 in words is "six billion, eight hundred two million, seven hundred eighty-two thousand, six hundred sixty-one".