556116647 has 2 divisors, whose sum is σ = 556116648. Its totient is φ = 556116646.

The previous prime is 556116641. The next prime is 556116677. The reversal of 556116647 is 746611655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556116647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556116641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278058323 + 278058324.

It is an arithmetic number, because the mean of its divisors is an integer number (278058324).

Almost surely, 2^556116647 is an apocalyptic number.

556116647 is a deficient number, since it is larger than the sum of its proper divisors (1).

556116647 is an equidigital number, since it uses as much as digits as its factorization.

556116647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 556116647 is about 23582.1255827374. The cubic root of 556116647 is about 822.3473524241.

The spelling of 556116647 in words is "five hundred fifty-six million, one hundred sixteen thousand, six hundred forty-seven".