6766777699 has 16 divisors (see below), whose sum is σ = 7893580896. Its totient is φ = 5732416000.

The previous prime is 6766777651. The next prime is 6766777711. The reversal of 6766777699 is 9967776676.

It is a cyclic number.

It is not a de Polignac number, because 6766777699 - 2⁷ = 6766777571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6766777609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160252 + ... + 198025.

It is an arithmetic number, because the mean of its divisors is an integer number (493348806).

Almost surely, 2^6766777699 is an apocalyptic number.

6766777699 is a deficient number, since it is larger than the sum of its proper divisors (1126803197).

6766777699 is a wasteful number, since it uses less digits than its factorization.

6766777699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358406.

The product of its digits is 252047376, while the sum is 70.

The square root of 6766777699 is about 82260.4260808318. The cubic root of 6766777699 is about 1891.4460997589.

It can be divided in two parts, 67 and 66777699, that added together give a palindrome (66777766).

The spelling of 6766777699 in words is "six billion, seven hundred sixty-six million, seven hundred seventy-seven thousand, six hundred ninety-nine".