6547655749 has 2 divisors, whose sum is σ = 6547655750. Its totient is φ = 6547655748.

The previous prime is 6547655729. The next prime is 6547655771. The reversal of 6547655749 is 9475567456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4393303524 + 2154352225 = 66282^2 + 46415^2 .

It is a cyclic number.

It is not a de Polignac number, because 6547655749 - 2⁹ = 6547655237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6547655693 and 6547655702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6547655729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273827874 + 3273827875.

It is an arithmetic number, because the mean of its divisors is an integer number (3273827875).

Almost surely, 2^6547655749 is an apocalyptic number.

It is an amenable number.

6547655749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6547655749 is an equidigital number, since it uses as much as digits as its factorization.

6547655749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752000, while the sum is 58.

The square root of 6547655749 is about 80917.5861540617. The cubic root of 6547655749 is about 1870.8053904439.

The spelling of 6547655749 in words is "six billion, five hundred forty-seven million, six hundred fifty-five thousand, seven hundred forty-nine".