6765997761 has 24 divisors (see below), whose sum is σ = 9833411016. Its totient is φ = 4482908160.

The previous prime is 6765997759. The next prime is 6765997781. The reversal of 6765997761 is 1677995676.

6765997761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1074200625 + 5691797136 = 32775^2 + 75444^2 .

It is not a de Polignac number, because 6765997761 - 2¹ = 6765997759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6765997751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1240801 + ... + 1246241.

It is an arithmetic number, because the mean of its divisors is an integer number (409725459).

Almost surely, 2^6765997761 is an apocalyptic number.

It is an amenable number.

6765997761 is a deficient number, since it is larger than the sum of its proper divisors (3067413255).

6765997761 is a wasteful number, since it uses less digits than its factorization.

6765997761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6273 (or 6270 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The square root of 6765997761 is about 82255.6852807148. The cubic root of 6765997761 is about 1891.3734276819.

The spelling of 6765997761 in words is "six billion, seven hundred sixty-five million, nine hundred ninety-seven thousand, seven hundred sixty-one".