6675947791 has 2 divisors, whose sum is σ = 6675947792. Its totient is φ = 6675947790.

The previous prime is 6675947783. The next prime is 6675947797. The reversal of 6675947791 is 1977495766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6675947791 - 2³ = 6675947783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6675947797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3337973895 + 3337973896.

It is an arithmetic number, because the mean of its divisors is an integer number (3337973896).

Almost surely, 2^6675947791 is an apocalyptic number.

6675947791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6675947791 is an equidigital number, since it uses as much as digits as its factorization.

6675947791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20003760, while the sum is 61.

The square root of 6675947791 is about 81706.4733726771. The cubic root of 6675947791 is about 1882.9450400131.

The spelling of 6675947791 in words is "six billion, six hundred seventy-five million, nine hundred forty-seven thousand, seven hundred ninety-one".