7256316647 has 2 divisors, whose sum is σ = 7256316648. Its totient is φ = 7256316646.

The previous prime is 7256316643. The next prime is 7256316677. The reversal of 7256316647 is 7466136527.

It is a weak prime.

It is an emirp because it is prime and its reverse (7466136527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7256316647 - 2² = 7256316643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7256316643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628158323 + 3628158324.

It is an arithmetic number, because the mean of its divisors is an integer number (3628158324).

Almost surely, 2^7256316647 is an apocalyptic number.

7256316647 is a deficient number, since it is larger than the sum of its proper divisors (1).

7256316647 is an equidigital number, since it uses as much as digits as its factorization.

7256316647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 47.

The square root of 7256316647 is about 85184.0163821829. The cubic root of 7256316647 is about 1936.0002482149. Note that the first 3 decimals are identical.

The spelling of 7256316647 in words is "seven billion, two hundred fifty-six million, three hundred sixteen thousand, six hundred forty-seven".