6654780247 has 2 divisors, whose sum is σ = 6654780248. Its totient is φ = 6654780246.

The previous prime is 6654780221. The next prime is 6654780257. The reversal of 6654780247 is 7420874566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6654780247 - 2²³ = 6646391639 is a prime.

It is a super-2 number, since 2×6654780247² = 88572200271722762018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6654780247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6654780217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327390123 + 3327390124.

It is an arithmetic number, because the mean of its divisors is an integer number (3327390124).

Almost surely, 2^6654780247 is an apocalyptic number.

6654780247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6654780247 is an equidigital number, since it uses as much as digits as its factorization.

6654780247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The square root of 6654780247 is about 81576.8364610935. The cubic root of 6654780247 is about 1880.9528374061.

The spelling of 6654780247 in words is "six billion, six hundred fifty-four million, seven hundred eighty thousand, two hundred forty-seven".