6820405733 has 2 divisors, whose sum is σ = 6820405734. Its totient is φ = 6820405732.

The previous prime is 6820405727. The next prime is 6820405771. The reversal of 6820405733 is 3375040286.

It is an a-pointer prime, because the next prime (6820405771) can be obtained adding 6820405733 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6818960929 + 1444804 = 82577^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 6820405733 - 2⁸ = 6820405477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6820405783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410202866 + 3410202867.

It is an arithmetic number, because the mean of its divisors is an integer number (3410202867).

Almost surely, 2^6820405733 is an apocalyptic number.

It is an amenable number.

6820405733 is a deficient number, since it is larger than the sum of its proper divisors (1).

6820405733 is an equidigital number, since it uses as much as digits as its factorization.

6820405733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 6820405733 is about 82585.7477595257. The cubic root of 6820405733 is about 1896.4296508191.

The spelling of 6820405733 in words is "six billion, eight hundred twenty million, four hundred five thousand, seven hundred thirty-three".