6766961385 has 16 divisors (see below), whose sum is σ = 11078933184. Its totient is φ = 3525114432.

The previous prime is 6766961363. The next prime is 6766961389. The reversal of 6766961385 is 5831696676.

6766961385 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6766961385 - 2¹⁵ = 6766928617 is a prime.

It is a super-2 number, since 2×6766961385² = 91583532772162236450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6766961389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5245062 + ... + 5246351.

It is an arithmetic number, because the mean of its divisors is an integer number (692433324).

Almost surely, 2^6766961385 is an apocalyptic number.

It is an amenable number.

6766961385 is a deficient number, since it is larger than the sum of its proper divisors (4311971799).

6766961385 is a wasteful number, since it uses less digits than its factorization.

6766961385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10491464.

The product of its digits is 9797760, while the sum is 57.

The square root of 6766961385 is about 82261.5425639466. The cubic root of 6766961385 is about 1891.4632142084.

The spelling of 6766961385 in words is "six billion, seven hundred sixty-six million, nine hundred sixty-one thousand, three hundred eighty-five".