8320217747 has 2 divisors, whose sum is σ = 8320217748. Its totient is φ = 8320217746.

The previous prime is 8320217687. The next prime is 8320217749. The reversal of 8320217747 is 7477120238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8320217747 - 2⁶ = 8320217683 is a prime.

Together with 8320217749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8320217749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160108873 + 4160108874.

It is an arithmetic number, because the mean of its divisors is an integer number (4160108874).

Almost surely, 2^8320217747 is an apocalyptic number.

8320217747 is a deficient number, since it is larger than the sum of its proper divisors (1).

8320217747 is an equidigital number, since it uses as much as digits as its factorization.

8320217747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 8320217747 is about 91215.2276048248. The cubic root of 8320217747 is about 2026.3364847634.

The spelling of 8320217747 in words is "eight billion, three hundred twenty million, two hundred seventeen thousand, seven hundred forty-seven".