8645227823 has 2 divisors, whose sum is σ = 8645227824. Its totient is φ = 8645227822.

The previous prime is 8645227819. The next prime is 8645227831. The reversal of 8645227823 is 3287225468.

8645227823 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8645227823 - 2² = 8645227819 is a prime.

It is a super-2 number, since 2×8645227823² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8645227813) 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, 4322613911 + 4322613912.

It is an arithmetic number, because the mean of its divisors is an integer number (4322613912).

Almost surely, 2^8645227823 is an apocalyptic number.

8645227823 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645227823 is an equidigital number, since it uses as much as digits as its factorization.

8645227823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 47.

The square root of 8645227823 is about 92979.7172667244. The cubic root of 8645227823 is about 2052.3849160669.

The spelling of 8645227823 in words is "eight billion, six hundred forty-five million, two hundred twenty-seven thousand, eight hundred twenty-three".