6765216977 has 2 divisors, whose sum is σ = 6765216978. Its totient is φ = 6765216976.

The previous prime is 6765216973. The next prime is 6765217027. The reversal of 6765216977 is 7796125676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4191785536 + 2573431441 = 64744^2 + 50729^2 .

It is a cyclic number.

It is not a de Polignac number, because 6765216977 - 2² = 6765216973 is a prime.

It is a super-3 number, since 3×6765216977³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6765216971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382608488 + 3382608489.

It is an arithmetic number, because the mean of its divisors is an integer number (3382608489).

Almost surely, 2^6765216977 is an apocalyptic number.

It is an amenable number.

6765216977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6765216977 is an equidigital number, since it uses as much as digits as its factorization.

6765216977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6667920, while the sum is 56.

The square root of 6765216977 is about 82250.9390645481. The cubic root of 6765216977 is about 1891.3006711834.

The spelling of 6765216977 in words is "six billion, seven hundred sixty-five million, two hundred sixteen thousand, nine hundred seventy-seven".