6774522745 has 4 divisors (see below), whose sum is σ = 8129427300. Its totient is φ = 5419618192.

The previous prime is 6774522731. The next prime is 6774522749. The reversal of 6774522745 is 5472254776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3567792361 + 3206730384 = 59731^2 + 56628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6774522745 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6774522749) 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 3 ways as a sum of consecutive naturals, for example, 677452270 + ... + 677452279.

It is an arithmetic number, because the mean of its divisors is an integer number (2032356825).

Almost surely, 2^6774522745 is an apocalyptic number.

It is an amenable number.

6774522745 is a deficient number, since it is larger than the sum of its proper divisors (1354904555).

6774522745 is a wasteful number, since it uses less digits than its factorization.

6774522745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354904554.

The product of its digits is 3292800, while the sum is 49.

The square root of 6774522745 is about 82307.4889970530. The cubic root of 6774522745 is about 1892.1674549933.

The spelling of 6774522745 in words is "six billion, seven hundred seventy-four million, five hundred twenty-two thousand, seven hundred forty-five".