6747667477 has 4 divisors (see below), whose sum is σ = 6749081260. Its totient is φ = 6746253696.

The previous prime is 6747667469. The next prime is 6747667519. The reversal of 6747667477 is 7747667476.

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 594676996 + 6152990481 = 24386^2 + 78441^2 .

It is a cyclic number.

It is not a de Polignac number, because 6747667477 - 2³ = 6747667469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6747667177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699708 + ... + 709285.

It is an arithmetic number, because the mean of its divisors is an integer number (1687270315).

Almost surely, 2^6747667477 is an apocalyptic number.

It is an amenable number.

6747667477 is a deficient number, since it is larger than the sum of its proper divisors (1413783).

6747667477 is a wasteful number, since it uses less digits than its factorization.

6747667477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413782.

The product of its digits is 58084992, while the sum is 61.

The square root of 6747667477 is about 82144.1871163140. The cubic root of 6747667477 is about 1889.6638612570.

Subtracting 6747667477 from its reverse (7747667476), we obtain a palindrome (999999999).

The spelling of 6747667477 in words is "six billion, seven hundred forty-seven million, six hundred sixty-seven thousand, four hundred seventy-seven".