6773663777 has 6 divisors (see below), whose sum is σ = 7015293558. Its totient is φ = 6540088352.

The previous prime is 6773663731. The next prime is 6773663779. The reversal of 6773663777 is 7773663776.

It can be written as a sum of positive squares in 3 ways, for example, as 224970001 + 6548693776 = 14999^2 + 80924^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6773663777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6773663779) 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 5 ways as a sum of consecutive naturals, for example, 4026308 + ... + 4027989.

It is an arithmetic number, because the mean of its divisors is an integer number (1169215593).

Almost surely, 2^6773663777 is an apocalyptic number.

It is an amenable number.

6773663777 is a deficient number, since it is larger than the sum of its proper divisors (241629781).

6773663777 is an equidigital number, since it uses as much as digits as its factorization.

6773663777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054355 (or 8054326 counting only the distinct ones).

The product of its digits is 32672808, while the sum is 59.

The square root of 6773663777 is about 82302.2707888428. The cubic root of 6773663777 is about 1892.0874798643.

Subtracting 6773663777 from its reverse (7773663776), we obtain a palindrome (999999999).

The spelling of 6773663777 in words is "six billion, seven hundred seventy-three million, six hundred sixty-three thousand, seven hundred seventy-seven".