6547427947 has 2 divisors, whose sum is σ = 6547427948. Its totient is φ = 6547427946.

The previous prime is 6547427927. The next prime is 6547427951. The reversal of 6547427947 is 7497247456.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6547427947 is a prime.

It is not a weakly prime, because it can be changed into another prime (6547427927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273713973 + 3273713974.

It is an arithmetic number, because the mean of its divisors is an integer number (3273713974).

Almost surely, 2^6547427947 is an apocalyptic number.

6547427947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6547427947 is an equidigital number, since it uses as much as digits as its factorization.

6547427947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 55.

The square root of 6547427947 is about 80916.1785244459. The cubic root of 6547427947 is about 1870.7836942232.

The spelling of 6547427947 in words is "six billion, five hundred forty-seven million, four hundred twenty-seven thousand, nine hundred forty-seven".