8736868447 has 2 divisors, whose sum is σ = 8736868448. Its totient is φ = 8736868446.

The previous prime is 8736868397. The next prime is 8736868451. The reversal of 8736868447 is 7448686378.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8736868447 - 2³¹ = 6589384799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8736868487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4368434223 + 4368434224.

It is an arithmetic number, because the mean of its divisors is an integer number (4368434224).

Almost surely, 2^8736868447 is an apocalyptic number.

8736868447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8736868447 is an equidigital number, since it uses as much as digits as its factorization.

8736868447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43352064, while the sum is 61.

The square root of 8736868447 is about 93471.2172115031. The cubic root of 8736868447 is about 2059.6112980588.

The spelling of 8736868447 in words is "eight billion, seven hundred thirty-six million, eight hundred sixty-eight thousand, four hundred forty-seven".