5656662647 has 2 divisors, whose sum is σ = 5656662648. Its totient is φ = 5656662646.

The previous prime is 5656662643. The next prime is 5656662709. The reversal of 5656662647 is 7462666565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5656662647 - 2² = 5656662643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5656662643) 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 as a sum of consecutive naturals, namely, 2828331323 + 2828331324.

It is an arithmetic number, because the mean of its divisors is an integer number (2828331324).

Almost surely, 2^5656662647 is an apocalyptic number.

5656662647 is a deficient number, since it is larger than the sum of its proper divisors (1).

5656662647 is an equidigital number, since it uses as much as digits as its factorization.

5656662647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 53.

The square root of 5656662647 is about 75210.7881025056. The cubic root of 5656662647 is about 1781.7773190524. Note that the first 3 decimals are identical.

The spelling of 5656662647 in words is "five billion, six hundred fifty-six million, six hundred sixty-two thousand, six hundred forty-seven".