6767447649 has 4 divisors (see below), whose sum is σ = 9023263536. Its totient is φ = 4511631764.

The previous prime is 6767447647. The next prime is 6767447651. The reversal of 6767447649 is 9467447676.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6767447647) and next prime (6767447651).

It is a cyclic number.

It is not a de Polignac number, because 6767447649 - 2¹ = 6767447647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6767447592 and 6767447601.

It is not an unprimeable number, because it can be changed into a prime (6767447647) 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, 1127907939 + ... + 1127907944.

It is an arithmetic number, because the mean of its divisors is an integer number (2255815884).

Almost surely, 2^6767447649 is an apocalyptic number.

It is an amenable number.

6767447649 is a deficient number, since it is larger than the sum of its proper divisors (2255815887).

6767447649 is a wasteful number, since it uses less digits than its factorization.

6767447649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255815886.

The product of its digits is 42674688, while the sum is 60.

The square root of 6767447649 is about 82264.4981082362. The cubic root of 6767447649 is about 1891.5085190548.

The spelling of 6767447649 in words is "six billion, seven hundred sixty-seven million, four hundred forty-seven thousand, six hundred forty-nine".