6477769345 has 4 divisors (see below), whose sum is σ = 7773323220. Its totient is φ = 5182215472.

The previous prime is 6477769327. The next prime is 6477769349. The reversal of 6477769345 is 5439677746.

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 4400597569 + 2077171776 = 66337^2 + 45576^2 .

It is a cyclic number.

It is not a de Polignac number, because 6477769345 - 2¹³ = 6477761153 is a prime.

It is a super-2 number, since 2×6477769345² = 83922991374043458050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6477769345.

It is not an unprimeable number, because it can be changed into a prime (6477769349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647776930 + ... + 647776939.

It is an arithmetic number, because the mean of its divisors is an integer number (1943330805).

Almost surely, 2^6477769345 is an apocalyptic number.

It is an amenable number.

6477769345 is a deficient number, since it is larger than the sum of its proper divisors (1295553875).

6477769345 is a wasteful number, since it uses less digits than its factorization.

6477769345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295553874.

The product of its digits is 26671680, while the sum is 58.

The square root of 6477769345 is about 80484.5907301516. The cubic root of 6477769345 is about 1864.1255542143.

The spelling of 6477769345 in words is "six billion, four hundred seventy-seven million, seven hundred sixty-nine thousand, three hundred forty-five".