6765487081 has 2 divisors, whose sum is σ = 6765487082. Its totient is φ = 6765487080.

The previous prime is 6765487067. The next prime is 6765487109. The reversal of 6765487081 is 1807845676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5823979225 + 941507856 = 76315^2 + 30684^2 .

It is a cyclic number.

It is not a de Polignac number, because 6765487081 - 2⁵ = 6765487049 is a prime.

It is a super-2 number, since 2×6765487081² = 91543630886355801122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6765487181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382743540 + 3382743541.

It is an arithmetic number, because the mean of its divisors is an integer number (3382743541).

Almost surely, 2^6765487081 is an apocalyptic number.

It is an amenable number.

6765487081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6765487081 is an equidigital number, since it uses as much as digits as its factorization.

6765487081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 6765487081 is about 82252.5809990179. The cubic root of 6765487081 is about 1891.3258411609.

The spelling of 6765487081 in words is "six billion, seven hundred sixty-five million, four hundred eighty-seven thousand, eighty-one".