6780564533 has 2 divisors, whose sum is σ = 6780564534. Its totient is φ = 6780564532.

The previous prime is 6780564517. The next prime is 6780564541. The reversal of 6780564533 is 3354650876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6285635524 + 494929009 = 79282^2 + 22247^2 .

It is a cyclic number.

It is not a de Polignac number, because 6780564533 - 2⁴ = 6780564517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6780564503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390282266 + 3390282267.

It is an arithmetic number, because the mean of its divisors is an integer number (3390282267).

Almost surely, 2^6780564533 is an apocalyptic number.

It is an amenable number.

6780564533 is a deficient number, since it is larger than the sum of its proper divisors (1).

6780564533 is an equidigital number, since it uses as much as digits as its factorization.

6780564533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The square root of 6780564533 is about 82344.1833586320. The cubic root of 6780564533 is about 1892.7297911760.

The spelling of 6780564533 in words is "six billion, seven hundred eighty million, five hundred sixty-four thousand, five hundred thirty-three".